As stated this will contain the changes that has been made to the anime. Some of the episode may be expanded as there are missing changes that wasn't listed from the site that I have gotten this from.
For Discussion: https://shunkashuutou89.wixsite.com/theworldofjculture/forum/anime/discussion-sword-art-online-anime
Episode 24 - My Hero
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 22 - Titan of the Sword
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 20 - Synthesis
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 19 - The Seal of the Right Eye
Several of Kirito's inner thoughts as he sat on the balcony with Alice were omitted, including:
Deducing that Linel and Fizel were likely born within the Axiom Church.
Planning his next move after defeating Quinella, starting with making contact with Rath to stop the incoming Dark Territory invasion.
Deducing that the Underworld was probably the end result of Kayaba Akihiko's research and that the World Seed was likely created for that purpose.
Deducing that Kikuoka Seijirou's goal with creating the Underworld was likely related with Japan's national defense.
The scene where Kirito deduced that there must be a traitor in Rath, who is trying to sabotage Project Alicization, upon discovering the Seal of the Right Eye was omitted.
During his encounter with Quinella, several scenes and some of Eugeo's inner thoughts were omitted, including:
Being stunned by Quinella's beauty, noting she was even more beautiful than Alice.
His brother getting angry over him getting the woodcutter Sacred Task.
Getting angry at his father over him taking his pay for his Sacred Task.
Jink bullying him after Alice got taken away, saying he will now never get married.
Episode 18 - The Legendary Hero
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 17 - Truce
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 16 - The Osmanthus Knight
In the anime, the Night Sky Sword did not transform into the Gigas Cedar when Kirito used his Armament Full Control Art.
The scene where the ice that stole the Knight's life scattered to Spatial Resources in the air has been omitted.
The scene where Eugeo talks to Fizel and Linel about how strong Kirito and Fanatio's hearts are has been removed.
Eugeo worrying about the Four Oscillation Blade omitted in the anime.
The insect sent by Administrator to monitor Cardinal that scared Kirito and Eugeo after Fanatio's duel has not appeared.
When the duo is about to resume their ascent, Eugeo's doubts about Kirito's identity were omitted.
In the novel, the color of Elevating Operator's dress is described as sober black, while her dress is blue in the anime.
In the anime, Eugeo thinking of creating an ice rope to rescue the fallen Kirito and Alice before the reconstruction of the wall has been omitted.
Episode 14 - The Crimson Knight
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 13 - Ruler and Mediator
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 12 - The Sage of the Library
In the Light Novel, the "Enhance Armament" Sacred Art is a fairly long ritual, but Eldire was able to recite it in seconds.
Because of this, the mention of higher Sacred Arts being harder to cast because they are composed of more words, increasing the chance to make a mistake while reciting them, was omitted.
Because of this, Kirito's shock at Eldrie's casting speed was omitted.
The scene where Eldrie revealed that he can increase the number of whips on his Frost Scale Whip to seven was omitted.
The scene where Kirito throws a shard of the Eldrie's wine glass, which shattered when their Sacred Arts clashed, at the latter, which manages to grace his cheek, was omitted.
The scene where Kirito stares over Eldrie's shoulder as he charges at him, causing the latter to assume Eugeo was attempting to ambush him from behind, was omitted.
The mention of the bones in Eldrie's hand breaking as he caught Kirito's chain was omitted.
The scene where Kirito realizes Eugeo was back on his feet and continued talking to Eldrie about his "summoning", in order to distract him while Eugeo ambushed him from behind, was omitted.
The scene where Eugeo displayed admiration towards Eldrie after he used his "Release Recollection" Sacred Art to block his sword was omitted.
Because of this, the mention of Kirito being surprised Eugeo could still do so in their current situation was also omitted.
In the Light Novel, when Eugeo realizes who Eldrie is he also mentions that he was the winner Four Empires Unity Tournament and had defeated both Sortiliena and Volo Levantein during it.
The scene where Kirito became intrigued in Cardinal after she referred to Sacret Arts as system commands was omitted.
The scene where Cardinal mentions her tea can cure ailments, causing Kirito to realize she told Eugeo to take a bath because she wanted to be alone with him, was omitted.
The scene where Cardinal gives Kirito the rhetorical question as to why the Human Empire had a nobility system was omitted.
The scene where Cardinal explains that when two Underworld inhabitants have children said children will inherit their parents stats, and with it their personality, was omitted.
Therefore, the scene where Cardinal explains that Quinella was born from a political marriage between two nobles, causing her to inherit their thirst for power, was also omitted.
The scenes featuring Quinella's past were Anime Original Content.
In the Light Novel, Cardinal merely told the story to Kirito in the present.
The mention of Quinella's excuse for creating a taboo that limits hunting animals being to prevent overhunting, and hide that it was really to prevent anyone from increasing their stats, was omitted.
Episode 11 - Central Cathedral
The scene where Eugeo was shocked at the strength and speed of the strike Alice used to push him away, claiming he did not even see it comming, was omitted.
The scene where Alice was surprised that Eugeo Life only dropped by 15%, as she intended to drop it by 30%, was also omitted.
The mention of Kirito and Eugeo being surprised that Alice was able to hold both the Blue Rose Sword and Kirito's sword with ease, despite them both barely being able to hold one of them, was omitted.
The scene where Kirito mentions that the way he entered the the Central Cathedral was different from how he expected, as he and Eugeo were being carried to it as criminals, was omitted.
Therefore, the scene were Eugeo realizes Kirito intented to enter the Cathedral was also omitted.
The scene where Asuna remembered how Kirito would always cheer her up following an exhausting Floor Boss in SAO battle, while overlooking his body, was omitted.
The mention of Asuna being set to board the next helicopter back to the main land was omitted.
Therefore, the mention that Aki claimed that Kirito would likely have recovered enough for Asuna to have one talk with her before she leaves was also omitted.
The scene where Kirito considered the underground dungeons of Aincrad to be luxurious compared to the one he and Eugeo were in was omitted.
The scene where Rinko asks whether Higa whether "Niemon" could operate on its own, as she remembered her strangely realistic dream of Kayaba, and he answered that it was shut down was omitted.
The scene where Kirito thought back to his busy schedule to level up quickly in SAO was omitted.
The scene in the prison cell where Eugeo was in disbelief at everthing that had happened was omitted.
Because of this, the scene where Kirito calmed him down was also omitted.
The scene where Kirito deduced that Raios died due to his Fluctlight collapsing was omitted.
The scene where Kirito decided not to feel remorse for killing Raios, as he felt like doing so would dishonor the goblins he previously killed, was also omitted.
The scene where Kirito wonders what Rath's goal is with the Underworld was omitted.
The scene where Kirito wonders why Rath has not attempted to retrieve Eugeo's Fluctlight yet was omitted.
Therefore, the scene where Kirito deduces it to likely be because they simply have not noticed it yet, due to the time acceleration, or were occupied with something else was also omitted.
The scene where Kiroto states that if the underworld had an actual god he would punch that person in the face, thinking of Kikuoka, was omitted.
Therefore, the scene where Eugeo warns Kirito the watch his words, lest the Goddess of Creation Stacia might upon divine retribution, was also omitted.
Because of this, the scene where Kirito realizes that Eugeo has not lost faith in the gods of the Underworld, despite having lost faith in the Axiom Church, was also omitted.
The mention of the entire chain not disappearing because it was made of many pieces, causing only a few chains to dissapear, was omitted.
The scene after Kiroto and Eugeo break out of their prison cell, where Kirito warns Eugeo that they would now be actively going against the Axiom Church, was omitted.
Because of this, the mention of them now, without their weapons, not standing a chance against an Integridy Knight was also omitted.
The mention of the reason why Roses are so rare being because they consume more Life to grow than any other flower, causing them to be forbidden from being planted, was omitted.
The scene where Eugeo thinks that defeating the Axiom Church will allow Kirito to regain his memories, which he believed were lost like Alice's, was omitted.
Therefore, the scene where Kirito told Eugeo he would stick with him until the end of their journey was also omitted.
The scene where Kirito and Eugeo use a Sacred Art to locate their swords was omitted.
Episode 10 - Taboo Index
Eugeo's inner thought that the stormy weather was a manifestation of Alice's displeasure, that it was taking him so much time to save her, was omitted.
The scene where Eugeo asks Kirito whether he has thought of a name for his sword yet was omitted.
Eugeo's belief that, even with the authority granted to them by school rules, Raios and Humbert could not harm Ronye and Tiese, due to Imperial Law and the Taboo Index taking precedence, was omitted.
The mention of the ropes Raios and Humbert used to bind Ronye and Tiese being strict, to prevent the former duo from breaking the Taboo Index by accidentally decreasing the latter duo's Life, was omitted.
The scene where Raios throws himself onto Tiese was anime original content.
Eugeo's inner thoughts and criticism of the Taboo Index, as it allowed Raios and Humbert to do as they pleased with Ronye and Tiese, were omitted.
Tiese telling Eugeo not to get involved, as it would lead to him breaking the Taboo Index, was omitted.
The scene where Eugeo sees an image of Alice as Tiese is about to be violated was omitted.
The mention of Eugeo being paralyzed from shock after cutting off Humbert's arm was omitted.
Raios' claims when he is about to execute Eugeo, about how even his father and uncle never killed before and that this would allow him to surpass Volo Levantein, were omitted.
The mention of Kirito using Serlut Style «Whirling Current» to counter Raios' «Avalanche», as there was not enough room to use «Vertical Square», was omitted.
The mention of Kirito's «Whirling Current» reactivating due to Radios' «Avalanche» pushing it back to its pre-motion stance, restoring its strength and allowing it to overpower Radios' skill, was omitted.
The mention of Sortiliena having used the same strategy against Volo was also omitted.
The scene where Kirito offered Raios a rope to stop his bleeding was anime original content.
The mention of Raios' death being the result his Fluctlight collapsing, due to being torn between obeying the Taboo Index and committing a Taboo, was omitted.
The mention of Kirito and Eugeo only being guilty of decreasing another's life, as Raios' Fluctlight collapsed on its own, was omitted.
Episode 9 Nobleman's Responsibilities
The scene of Kirito not being able to go to the practice hall with Eugeo, because he had to study for an upcomming Sacret Arts exam, was omitted.
Details regarding how Eugeo and Kirito become the 5th and 6th Elite Swordsman-in-Training respectively were omitted.
The scene where Eugeo recalls his final meeting with his senior, Gorgolosso, was omitted.
The mention of Eugeo's right eye beginning to hurt whenever he became critical of the Underworld's laws was omitted.
The scene during Eugeo's and Humbert's sparring match, where Eugeo refuses to accept that the Goddess of Creation, Stacia, would tolerate Humbert infusing his swords with hubris, was omitted.
Details regarding Humbert's "strange orders" to his valet, Frenica Szeski, were omitted.
The mention of a prophecy that one day the Dark Territory would invade the Human Empire was omitted.
Because of this, the mention of nobles being able to enjoy luxurious lifestyles because they are expected to in exchange fight on the front lines when this time comes was also omitted.
The scene where Kirito and Eugeo entered Radios and Humbert's room and Humbert wanted them to leave, until Radios allowed them enterence, was omitted.
The scene where Raios and Humbert defend Humbert's treatment of his valet, by bringing that up Eugeo previously stripped before Gorgolosso to check his muscles, was omitted.
The scene where Eugeo tried grabbing his sword while Humbert talked about his "strange orders" to his valet, even though she was not carrying one at the time, was anime original content.
In the Light Novel, Eugeo was only considering drawing his sword.
The scene where Eugeo thinks back on his life and how far he has come was omitted.
Episode 8 - Swordsman's Pride
Kirito's doubt whether it was okey for him to duel Volo, as he was Sortiliena's rival, was omitted.
The scene where Kirito was reminded of Kuradeel as Volo took his stance to perform «Avalanche» was omitted.
Therefore, the scene where Kirito briefly considered using «Arms Blast» against him, before abandoning the idea out of concern for breaking his own sword instead, was also omitted.
The mention of the figures behind Volo when his and Kirito's swords clashed being the former heads of the Levantein family was omitted.
The scene where Volo sees an image of the Gigas Cedar behind Kirito was anime original content.
The scene where Sortiliena scolded Kirito, by stating he should have just surrendered, was omitted.
Therefore, the mention of Kirito not knowing he could have just surrendered was also omitted.
In the Light Novel, the scene where Sortiliena told Kirito of the history of her Serlut Style and why she chose him as her Valet took place after their sparring match.
The scene where Kirito realized Raios and Humbert being able to destroy his flowers was because the earth they were planted in technically did not belong to him, as the Taboo Index forbids the destruction of another's property, was omitted.
The mention that Kirito would have cut Raios and Humbert down if he had a sword with him was omitted.
The graduation duel between Sortitiena and Volo was anime original content.
In the Light Novel, it was quickly glossed over in a short sentence.
The mention of Sortitiena being defeated in the Four Empires Unity Tournament by a member of the Norlangarth Knights was omitted.
The scene where Kirito saw an Integrity Knight returning to the Central Cathedral was omitted.
May expand more later.
Episode 7 - Swordcraft Academy
The events of the entirety of Chapter 3 were glossed over in a short montage.
Because of this, Charlotte was not introduced.
The scene where Kirito and Eugeo encounter Sortiliena while walking through the streets of Centoria was anime original content.
The scene where Sortiliena told Kirito of the history of her Serlut Style and why she chose him as her Valet, after their sparring match, was omitted.
In the Light Novel, the scene of Kirito retrieving the top branch of the Gigas Cedar took place before he and Eugeo left Rulid Village, instead of in a flashback.
In the Light Novel, when Kirito successfully swung his new sword, it caused a shockwave that accidentally cut a shield that hung on the wall in two.
Because of this, the scene where he was afraid Sadore would demand compensation was omitted.
The scene where Sadore tells Kirito to think of a proper name for the sword was omitted.
The scene where Kirito registers the sword with Azurika to allow him to keep it at the dorms was omitted.
Because of this, the scene where Azurika asks Kirito about the sword's memory was also omitted.
Details regarding Kirito not being allowed to practice due to it being Rest Day, to explain why he tested his sword in a remote clearing, were omitted.
Because of this, the mention of Volo Levantein also wanting to practice in secret was also omitted.
May expand more later.
Episode 6 - Project Alicization
In the light novel, Yui was the one who explained the concept of «Top-Down AI» and «Bottom-Up AI» during Asuna's, Leafa's and Sinon's meeting in ALfheim Online.
Because of this, Asuna already understood the basic concept when Seijirou brought it up.
Details on how the Rath staff who raised the original eight Artificial Fluctlights exited the Underworld were omitted.
Details regarding mankind's present disposition towards war and the current political climate, to explain why AI's designed for military purposes have become increasingly necessary, were omitted.
Details on how the memory blocking procedure works were omitted.
Details regarding Kirito's second childhood in the Underworld were omitted.
Details regarding possible side-effects from Kirito spending years in the Underworld were omitted.
The scene where Asuna explains the situation to Leafa, Sinon, Lisbeth and Silica in Alfheim Online was anime original content.
In the light novel, when Rinko confronted Kayaba following the outbreak of the SAO Incident, she was carrying a gun rather than of the knife.
The scene of Kayaba's and Rinko's first meeting and growing relationship was anime original content.
The scene where Rinko sees Kayaba in a dream was anime original content.
Episode 4 - Departure
In the novel, Ugachi attempted to warn the other goblins to protect the fires when he noticed what Eugeo and Kirito were planning.
After the fires were doused, the goblins reacted to Eugeo's glowing grass before Kirito managed to provide him with a sword in the novel. Additionally, Kirito, rather than Eugeo, was the one who realised that the goblins disliked the glowing grass and he gave Eugeo a sword directly to his hands while the goblins were distracted, before instructing the boy on their further course of action.
In the novel, Kirito did not encounter any goblin henchmen when he charged towards Ugachi after retrieving a sword. Additionally, Ugachi was attempting to protect his eyes from the light of Eugeo's grass at that moment.
The choreography of the battle between Kirito and Ugachi did not follow the description of the novel. Kirito was unable to pierce through the goblin's armour and only barely managed to avoid some of Ugachi's attacks.
Kirito was unaware of the existence of Sword Skills in Underworld before his battle with Ugachi. Instead, he accidentally triggered one while subconsciously attempting to reproduce the movements of the skill manually in an attempt to chain multiple attacks to overpower the goblin.
Kirito's musings about pain after suffering his first injury from Ugachi were greatly simplified in the anime.
During the fight between Kirito and Ugachi, the sequence of events from Kirito rising to his feet after being injured by the goblin until he was kicked to the ground again were anime-original. In the novel, Kirito was unable to rise to his feet until Eugeo intervened, due to being paralysed by fear.
The scene of Eugeo overcoming his fear to come to Kirito's aid was anime-original.
The choreography of Eugeo's battle against Ugachi did not follow the description of the novel. In the novel, Eugeo assaulted the goblin with a series of fast swings, while Ugachi focused on defence, enjoying the resistance of his prey. However, due to Eugeo's predictable rhythm, Ugachi tripped the boy by hitting his support leg, creating an opening for his fatal slash. Additionally, Eugeo did not use his glowing grass during the battle.
In the novel, Eugeo attempted to rise to his feet after being struck by Ugachi, despite having suffered a lethal injury.
The sequence of events in Kirito's final confrontation with Ugachi was different from the novel. In the novel, Kirito severed Ugachi's other arm before the goblin remarked about Kirito being an Ium. At that point, Kirito was able to sever the goblin's head with Sonic Leap with little resistance.
In the novel, a goblin named Aburi responded to Kirito's challenge after Ugachi's death; however, Kirito disposed of the goblin with another Sonic Leap before it could even finish its taunt.
In the novel, when Kirito checked Eugeo's status window, his Durability was decreasing at a rate of one point every two seconds. This decrease was accelerated in the anime for dramatic effect.
During the scene where Kirito came to Selka, he awoke her by shaking her shoulders, rather than calling her name from a distance, in the novel. Additionally, Selka did not immediately recognise the boy and attempted to push him aside due to mistaking him for a goblin.
In the novel, Kirito lifted Selka to bring her to Eugeo when the girl was about to begin to weep in
The mention regarding the villagers' reactions upon Kirito, Eugeo and Selka's return, as well as their shock upon seeing Ugachi's severed head, was omitted.
Eugeo's inner conflict when he asked Kirito to train him to be a swordsman was adapted differently and some of his dialogue was moved to a later scene instead.
The scene where Kirito and Eugeo ran away from the falling Gigas Cedar's trunk, as well as Kirito falling down in the process and losing 50 Durability, was omitted.
The mention of some villagers wanting to punish Kirito and Eugeo, for their unorthodox method of using Blue Rose Sword for felling the Gigas Cedar, was omitted.
The mention of Selka's skill at Sacred Arts having increased following her usage of a highly dangerous Sacred Arts after the fight against the goblins was omitted.
The duel between Eugeo and Jink was omitted.
The scene where Kirito tries out alcohol in Underworld and discovers its effects being as real as real life, was omitted.
The scene where Kirito kissed Selka on her forehead, in order to confirm that he was not an Artificial Fluctlight himself by attempting an act his real self would never do, was omitted.
The scene where Eugeo promises to Selka that he will bring Alice back was anime exclusive content.
The scene where Kirito retrieved the top branch of the Gigas Cedar, in order to have a craftsman in the Central Capital carve it into a sword, was omitted.
May expand more later.
Episode 3 - The End Mountains
In the novel, Kirito rose from the bed without the need for Selka to forcefully remove the covers from his bed.
Kirito's thoughts and remarks about his experience in Underworld feeling like a dream were omitted.
The scene where Kirito began changing from his sleepwear to his outdoor clothing was omitted.
The anime did not include the scene where Kirito checked the Durability of his tunic, postulating that the parameter summarised the measure of item degradation, as the world did not simulate bacteria.
The scene where Kirito contemplated on his situation and course of actions while washing his face before breakfast was omitted.
The scene where Kirito met Eugeo in town after breakfast and learnt that the only clock in Eugeo's world had been destroyed, forcing people to use Divine Objects known as Bells of Time Telling that automatically play chimes at half our intervals, was omitted.
In the novel, Kirito contemplated about getting Eugeo's help while still in the village, rather than at Eugeo's workplace.
In the novel, the Gigas Cedar scene began with Kirito, rather than Eugeo, swinging the Dragonbone Axe at the tree.
The anime did not show Kirito salivating at the description of Alice's pies due to having suppressed memories of what the pies tasted like.
In the novel, Kirito already knew about Alice's Sacred Task when he asked Eugeo about it.
During the conversation at the Gigas Cedar scene, the anime omitted mentions of: Sister Azariya having been reluctant to take a new apprentice after Alice was apprehended by an Integrity Knight; Eugeo's remarks about Selka being a timid girl before Alice was apprehended, and that the villagers were now all expecting Selka to be as gifted as Alice, causing her to move to the church to work even harder than Alice to meet the expectations.
Kirito's contemplation that the epidemic in the village had to be an intentional strain placed on the village by an outside force, as the simulation did not have actual bacteria or viruses, was omitted.
In the novel, Eugeo listed several other issues before mentioning the goblins.
Eugeo's explanation on how Durability mechanics worked in the world were omitted.
Kirito's contemplation on what would happen if he were to die in Underworld, and his decision to refrain from using death as a way to return to the real world unless it was his last resort, were omitted.
The anime did not show Kirito comparing the weight of the Blue Rose Sword to that of his cousin, Suguha.
In the novel, Eugeo did not give a clear reason why he had retrieved the Blue Rose Sword from the cave. Additionally, Eugeo did not offer Kirito to attempt to swing the sword.
Kirito's attempt at using the Horizontal Sword Skill from SAO did not cause the Blue Rose Sword to glow in the novel.
Kirito's musings about pain in Underworld being unlike the pain in the games he had played, as games used a Pain Absorber system, were omitted.
The anime did not mention that Kirito had been bathing with four other boys before they left the bath early, and that Selka and Sister Azariya had already had their bath.
During the bathing scene, Kirito thought about Asuna and his family being worried about his disappearance, the irregularity of his presence in Underworld with memories of the real world, and his desire to make his way through the world without a guidebook in the novel version of the story, rather than about the Axiom Church, the Taboo Index, and Alice.
The scene of Selka offering Kirito some well water before their conversation at his room began was omitted.
In the novel, when Kirito asked Selka about her sister, the girl attempted to pretend she did not actually have a sister, before Kirito informed her that he had heard about Alice from Eugeo. Additionally, Selka revealed that she had believed that Eugeo had forgotten about her sister, just like all the other villagers pretending that she had never existed.
During the conversation with Selka, Kirito's thoughts about Eugeo and his decision to help the boy find Alice were omitted.
In the novel, Kirito's remark about Selka liking Eugeo came when he saw her dejection after he mentioned that Eugeo still cared a lot about Alice, rather than after Selka described Eugeo as being alone.
The anime omitted Kirito's speculations on Selka's whereabouts in his conversation with Sister Azariya.
Eugeo's concern that Selka would try to pursue Alice if she knew why Alice was arrested by Deusolbert Synthesis Seven, which was why he had been reluctant to tell the girl about her sister's crime, was omitted.
Like in Alicization Episode 01, the System Call for generating a light source was changed from "Lit Small Rod" into "Generate Luminous Element. Adhere."
Kirito enquired about being able to cast Sacred Arts himself when he saw Eugeo using it to create a light source in the novel.
In the novel, the scene where Kirito shared his plan on how to prevent Selka's arrest if she were to break the Taboo Index took place before the two boys had reached the cave, rather than inside it. Additionally, Eugeo also mentioned Selka's Sacred Task would prevent her from proceeding with such a plan, as well as the fact that Selka would not be able to break a clause from the Taboo Index in the first place, unlike her sister.
In the novel, Eugeo and Kirito heard a strange sound and smelled a fire burning before they heard Selka's scream.
In the novel, the goblins were alerted to Eugeo and Kirito's presence when the nearest goblin happened to notice the two, rather because of Eugeo's shout. Additionally, Kirito made eye contact with the goblin, which allowed him to realise, to his terror, that the goblins possessed Fluctlights as well.
Episode 2 - The Demon Tree
During the scene where Kirito had a vision of his childhood in Underworld, Kirito did not see himself running alongside Alice and Eugeo in the anime.
The scene with Jink testing Kirito as a swordsman is anime-original.
The Dark Army was not mentioned by Eugeo when he stored the Dragon Bone Axe in the shed.
May expand more later.
Season 3
Episode 1 - Underworld
Eugeo's complaint about Kirito's frequency of checking the Durability of the Gigas Cedar was omitted.
The fact that the lunch brought to Eugeo and Kirito by Alice was sometimes made with the help of her mother, Sadina, was omitted from the anime. However, the anime did show the knowing smile the two kids shared when they realized that it was was one of those days Alice had help with making the lunch.
The children considering other options to cool their lunch was omitted from the anime.
The visualization of the «Bercouli and the Northern White Dragon» myth did not include the part where blue roses grew around Bercouli's feet, causing him to collapse, and awake the dragon. Instead, the dragon was shown to awake just as Bercouli grabbed the sword.
The scene where Eugeo and Kirito waited for Alice in Rulid on the morning of the cave visit was omitted.
In the novel, instead of talking about Alice and her future, the two boys discussed the possibility of becoming knights if they could manage to finish their current Sacred Task.
While en route to the cave, Eugeo was supposed to check whether the river was cold.
The System Call for generating a light source was changed from "Lit Small Rod" into "Generate Luminous Element. Adhere."
The scene of Eugeo and Kirito asking a farmer for directions as to where the Integrity Knight on the dragon went, since it was no longer visible to them during their chase, was omitted from the anime.
The scene were Deusolbert Synthesis Seven appeared to apprehend Alice, omitted various events:
Gasupht did not ask to hear the story from Alice's side.
Kirito and Eugeo did not preemptively try to help Alice run away.
Deusolbert did not command the villagers to bring Alice to him.
In the novel, Alice was bound after Kirito pleaded the knight for mercy. Meanwhile, the two boys were pulled back and forced to their knees.
In the novel, Eugeo and Kirito were being dragged out of the square under the village chief's orders when Kirito attempted to attack the knight.
The scene of Kazuto awaking from the Soul Translator was anime-original.
The scenes inside GGO were anime-original. The scenes also featured cameos of Fatal Bullet characters: Kureha and Zeliska could be seen playing pool at the bar; Itsuki's and Kureha's names appeared on the 4th Bullet of Bullets rankings, placed at 5th and 10th place respectively.
In the novel, Shinkawa Kyouji was one of the first topics Kazuto and Shino discussed. Additionally, the anime did not mention any of the details on Kyouji's fate or his state.
The discussion regarding Kyouji was followed by Shino talking about Shino watching old gun-related action movies that she had borrowed from Kirito.
The anime omitted the scene of Kazuto ordering baked beans, as well as Andrew mischievously bringing an extra serving for Shino out of Kazuto's tab.
Details of Sinon's encounter with Subtilizer, as well as the latter's playstyle, during the 4th Bullet of Bullets were omitted.
In the novel, Kazuto became aware that Asuna would be coming to the cafe before the girl had actually arrived, as Shino's hints prompted him to check his phone, which indicated Asuna's position.
References to Ordinal Scale were made in the Dicey Cafe scene in the anime, including mentioning the Augma, as well as showing the promise ring Kazuto had given to Asuna in Ordinal Scale.
The conversation about the Soul Translator and its mechanics was shortened for the anime adaptation.
Kazuto did not mention the the room full of cats that he experienced during one of his first STL tests, where his memories were not yet restricted.
While Kazuto's caution upon leaving the Dicey cafe was showcased, Shino's uneasiness was omitted.
In the light novels, it was Kazuto who initiated the discussion about going to America. In the anime, it was Asuna who started it after Kazuto came to a stop.
During the assault by Kanamoto Atsushi, Asuna did not go to nearby houses to ask for help.
Episode 24 - Mother's Rosario
The novel claimed that the rematch duel between Kirito and Yuuki lasted over 10 minutes, and ended when Yuuki used a skill to defeat Kirito in 11 hits. There was no mention of a time-limit, as portrayed in the anime.
The picnic at the end of the episode was not part of the original story.
Episode 22 - Journey's End
The scene where Siune tried to give Asuna the promised items for helping defeat the boss and Siune saying that she was planning to disband the guild as well were omitted.
The scene with Rika and Keiko was not part of the novel.
In the novel, Kazuto was not working on his probe while waiting for Asuna.
In the novel, the nurses carefully validated Asuna's identity before informing doctor Kurahashi about her.
In the novel, Asuna was directed to look for Kurahashi on the 4th floor, instead of being asked to wait on the same floor.
The mention of how Yuuki's mother's religion and her father helped her overcome her initial crisis was omitted.
The fact that Yuuki did well at school while her schoolmates did not know about her illness and that her condition worsened after rumours of her illness spread and some of her classmates started discriminating her, forcing her to change schools, was omitted.
In the novel, Asuna recalled Kirito saying that Yuuki had truly become a resident of the virtual world, instead of her being a product of the FullDive environment.
In the novel, the Medicuboid displayed the words "User Talking", instead of just "Talking".
Episode 21 - Swordsman's Memorial
In the novel, Kirito showed Asuna three fingers to indicate that he would keep off the guild for three minutes, instead of shouting it.
In the novel, two players from the boss clearing guild tried to sneak up on and assassinate Asuna and Siune, but Asuna noticed them and cast Aqua Bind to stop them. Then, after talking with Siune, she finished them off before charging at the rest of the guild.
In the novel, Asuna was the one who closed the doors to the boss room, instead of Siune.
In the novel, Asuna deduced the boss's weakness after thinking about Kirito battling The Gleam Eyes, instead of seeing Talken's spear exposing its weakness. Additionally, since she was casting a spell when she deduced the weakness, Asuna accidentally failed the incantation of her spell.
Episode 19 - Zekken (Absolute Sword)
Asuna and Kirito's conversation about recreating the taste of the Ragout Rabbit stew was omitted.
Asuna and Kirito's conversation about purchasing a house on Selmburg and later about Agil's Item Shop was omitted.
A word in Asuna's question about Yuuki spending a lot of time in the virtual world was changed from waste player (廃プレイヤー, Hai pureiyā) to heavy user (ヘビーユーザー, Hebī Yūzā).
In the novel, Yuuki asked Asuna if she was busy after their duel before leading her away. Thus Asuna willingly followed Yuuki and also had the time to tell the others that she would contact them later.
Kirito was not shown to have predicted that Asuna would be going away with Yuuki.
Episode 16 - The King of the Giants
Kirito's use of «Vertical Square» against the minotaur was changed to the use of «Horizontal Square».
Instances of puzzles that had to be solved to proceed through Thrymheim were all omitted.
Episode 15 - The Queen of the Lake
The scene where Klein complained about magic and the Sword Skill update was explained was not part of the original story.
The anime did not mention that the usual route to Jötunheimr involves going through a stairway dungeon and beating the boss guarding the entrance to Jötunheimr.
Kirito's suggestion for allowing other players to use their shortcut for a toll was omitted.
The anime omitted that Thrym turned into a wolf to infiltrate Jötunheimr.
Episode 13 - Phantom Bullet
The dialogue where Sinon revealed her address was muted, while Kirito merely stated that he was diving somewhere nearby.
Sinon did not begin to explain the whereabouts of the Gift Grenade as she handed it to Kirito.
The scene where Kirito was to throw the grenade was changed to him juggling it like a hot potato.
In the novel, Sinon was the one who looked at the rankings, but in the anime, Kirito was the one shown to be looking at the rankings.
The dialogue where Kyouji described Kirito threatening Sinon in the cave was omitted.
Kyouji placed the syringe at Shino's side, rather than on her neck. The explanation that the drug was succinylcholine was omitted.
The fact that Kyouji did not intend to inject the drug into Shino in the first place, until he was rejected, was omitted.
The scene where Kyouji showed Shino his horribly low test scores was omitted.
The scene where Shino threatened Kyouji with the Procyon SL was omitted.
Episode 12 - Bullet of a Phantom
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 7 - Crimson Memories
The scene in ALO was not part of the novel.
Episode 6 - Showdown in the Wilderness
In the novel, Kirito put Sinon's hand on his chest and then forehead, while in the anime, he only held it.
The "report sexual harassment" button in Sinon's point of view was not shown.
Episode 5 - Guns and Swords
The abbreviation of the Luck stat was changed from LUK to LUC.
Episode 4 - GGO (Has the same title as SAO Alternative GGO Episode 2)
The scene where the buyer asked for Kirito's accumulated game time was omitted. The mechanic regarding "business cards" within the game was also omitted.
The scene in the firing range was not part of the original story.
A robotic NPC brought the Photon Sword to Kirito, instead of a saleswoman.
Kirito's inner comments explaining his technique against the gunman were omitted.
Episode 3 Memories of Blood
Shino's thoughts about school were omitted.
The background for Shino's relationship with Endou was omitted.
In the anime, it was not explained how Shino got the model gun.
Asuna's reaction to the news about Kirito converting his account to another game was less dramatic than in the novel.
Kirito and Asuna were seen with rings on their fingers in ALO, despite the lack of a marriage system in ALO.
Kazuto did not listen to the recording of Death Gun's voice at home in the novel. Instead, he listened to it at the cafe during his meeting with Seijirou.
In the novel, people were seen exchanging ideas about Death Gun via BBS, but in the anime, they were seen of exchanging ideas via nickonicko livestream video service (a reference to niconico).
Season 2
Episode 1 - The World of Guns
Kazuto's comment about Yui having a little sister after seeing the twin girls was omitted.
Seijirou and Kazuto's conversation was greatly shortened. In the anime, they immediately began talking about the Death Gun incident, while in the novel they first talked about various other topics.
Various off topic remarks during Seijirou and Kazuto's meeting were omitted, including the joke about Usujio Tarako's and Hokkai Ikkura names.
Seijirou and Kazuto's discussion on the limit of AmuSphere functions was omitted.
Seijirou's talk about the Inuit Kiviak and how it resulted in the women of the nearby table leaving in disgust was omitted.
In the novel, Seijirou gave Kazuto a copy of the recording of Death Gun's voice to listen to.
Seijirou and Kazuto's meeting was changed into a flashback.
The conversation among Dyne's squad while they were waiting for their targets to show up was omitted.
Extra Edition
Kazuto's tandem was Honda's Thailand-made Dash125 in the novel, but it was changed to a Yamaha DT125R at Mr. Kawahara's suggestion. While it is still 125cc, its length is more than 25 cm longer.[3]
The original scene where Kirito reacted to the undressing Asuna and told her that she had misunderstood his intentions (near the end of Episode 10) had been cut out of the flashback of whole series of event.
Episode 25 - The World Seed
Kazuto did not tell the receptionists what happened in the anime, while in the novel he told them and grabbed a guest card in the process before heading off to see Asuna.
It was not mentioned known orange players put under counseling and observation after the SAO incident.
The mention of Kazuto's conversation with Koujiro Rinko was omitted.
Caynz and Yolko were not explicitly mentioned to be among the party members in the light novel.
Episode 24 - Gilded Hero
In the novel, Asuna told Kirito to log out when Oberon appeared, but he was unable to even open up the menu, let alone log out safely due to using a NerveGear.
In the novel, Kirito actually recited a complex alphanumeric password to access Heathcliff's ID. This was omitted in the anime.
Episode 23 - Bonds
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 22 - The Grand Quest
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 21 - The Truth About Alfheim
Kirito and Leafa's adventure in Jötunheimr was omitted in the anime.
In the novel, while traveling on Tonky, Leafa shoved a snowball down Kirito's collar and onto his back to awake him. That is where Kazuto later got the idea of waking the half-asleep Suguha by pouring down cold water on her back.
Episode 20 - General of the Blazing Flame
In the novel, Eugene used a fire spell to clear out Kirito's smoke spell. In the anime, he clears it with the blow of his sword.
In the anime, it is not mentioned that dual wielding has been attempted by other players, but that no one is known to have managed to efficiently use the style in battle, as it is difficult for a person to manipulate 2 swords with both hands and have them working in sync.
Eugene does not see Kirito using the other sword in the anime until the latter uses Leafa's katana to block his sword and shows a sign of shock. In the novel, he spots the katana and smiles thinking that Kirito is being desperate to kill him.
Jötunheimr is not mentioned at all in the anime.
Kagemune simply talks to Eugene in the anime, while in the novel he bows before talking to him. His talk with Eugene also seems to be slightly shorter, as he does not mention what happened to Gtacs's party in the anime, nor does he mention "S" (Sigurd).
In the novel, Kagemune winks at Leafa, most likely due to Kirito sparing him earlier on, and thus his lie to Eugene was his way to pay a debt to her. In the anime, he is not seen after Eugene and his group leaves, therefore it is not shown at all.
In the light novel, after beating Eugene, Kirito smiles at the cheer that everyone was giving him while bowing at the audience. However, in the anime, he just swings his sword and stares down.
Episode 17 - Captive Queen
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 15 - Return
None Listed. I will add in when the site that I got this information updates it may take a long time for it to happen or it may not happen.
Episode 14 - The End of the World
In the light novel, while fighting "The Skull Reaper" on the 75th Floor, Kirito was still wearing the KoB's guild uniform, while in the anime he was wearing his Blackwyrm Coat.
Kirito's inner monologue on Heathcliff's skills and abilities that led to him deducing his real identity was omitted.
Heathcliff did not mention that he was planning to help the players defeat the powerful mobs of monsters on the 90th Floors in the anime.
In the novel, a KoB member attacked Heathcliff with a halberd after discovering that Heathcliff was actually Kayaba Akihiko. In the anime, the KoB member attacked Heathcliff with a sword instead.
Heathcliff did not mention keeping Asuna in Selmburg after Kirito asked him to make sure Asuna did not kill herself if he died in the duel with him.
The final part of "Warmth of the Heart", from Volume 2, and "The Final Promise" from Silica Edition were omitted in the anime. The anime did, however, portray the announcement being played over the game.
Kayaba Akihiko's talk with Kirito and Asuna was slightly shorter in the anime than it was in the novel.
Episode 13 - Edge of Hell's Abyss
In the light novel, Kirito wondered if Nishida was an Non-Player Character, before Nishida confirmed that he was a player, while in the anime, he explained his real-life occupation after meeting.
There was no mentioning of the scouting party getting to the boss room without casualties. Along with that, when the boss door closed, separating the group, the outside group attempted to open the door, which was also not mentioned in the anime.
When The Skull Reaper lands onto the large platform, the novel states that there were three players who did not react quick enough and got killed by the boss. The anime instead only shows two players.
In the light novel, when Asuna confronts the The King of Lakes, Nishida takes a fishing rod from one of his fellow fishermen to use it to help Asuna with the monster, while in the anime he panics and tries to get Kirito to call her back.
In the light novel, the fish takes a while to kill, being hurt when an explosion from Asuna's rapier sends it flying. The fish then gets hit by a chain attack, and is killed by the ability Flashing Penetrator. In the anime, Asuna instantly kills it with only Flash Penetrator.
In the light novel, the crowd that came at the fishing event found out that Asuna and Kirito were married and expressed their displeasure about it. In the anime, they just flock to Asuna after she killed the The King of Lakes, but showed no signs of realizing that she was married.
The rare fishing rod that Asuna got for killing the The King of Lakes was not mentioned at all in the anime.
In the light novel, before Kirito and Asuna leave and are talking with Nishida, they are all sitting on a bench nearby. In the anime, the three are standing near the Teleport Gate and Nishida's past is omitted in this scene.
Kirito does not mention that the Aincrad's quarter bosses, the 25th and the 50th Floor bosses, were much more dangerous than the bosses of the adjacent floors when Heathcliff explains that they have found the 75th boss room in the anime.
Episode 11 - Girl of the Morning Dew
The events of The Day Before, including Kirito and Asuna's marriage scene were omitted.
The scene where Kirito and Asuna visited the KoB Headquarters to ask for a temporary leave actually happened on the same day as the incident at the 55th Floor's Labyrinth entrance in the novel.
In the novel, Kirito disclosed to Asuna the summary story of the "Ghost Girl in the Forest" while they were still at home and later added more details when they reached the forest. In the anime, Kirito informed Asuna of the "ghost girl" only when they were inside the forest.
The part where Kirito told Asuna about his unsuccessful attempt at climbing the pillars that connected the floors of Aincrad was omitted in the anime.
The part where Kirito mentioned Silica in his travels was omitted in the anime.
The part where Yui opened her main menu, revealing its unusual design to Kirito and Asuna, was omitted in the anime.
The meeting with a player on the 1st Floor who told Kirito, Asuna, and Yui about the church and The Army's activity was omitted in the anime.
In the novel, Asuna and Kirito first went to the 1st Floor church where they met Sasha and were informed that several children were trapped by «The Army». In the anime, the couple came across the said children and Sasha in an alley of the central market.
In the novel, The Army members rushed to the aid of their leaders, and those who were not stunned by Asuna's assault deserted the alleyway. In the anime, Asuna only targeted the leader, and all of The Army players quickly escaped the area.
In the novel, Asuna simply rushed to embrace Yui when the child began suffering the glitch-like episode, while in the anime, she caught Yui when the young girl fell from Kirito's back and before she hit the ground.
Episode 8 - The Sword Dance of Black and White
In the novel, when Asuna enters Agil's shop, she has two escorts (one is Kuradeel, the other is unnamed). In the Anime, only Kuradeel is her escort.
Kirito only showed surprise when Asuna said that she had completed her Cooking skill in the anime. In the novel, Kirito thought that she was an idiot for spending so much time leveling up a skill that was not important for a fighter, as maxing a skill was an extremely tedious task.
In the novel, Kuradeel did not take out a second weapon when dueling with Kirito and also made a comment of wanting to kill Kirito. Kuradeel also said "I resign." to end the duel.
In the novel, Kuradeel used a Teleport Crystal to return to Granzam, while in the anime, he used the Teleport Gate.
Kirito and Asuna's near encounter with the Battalion from «The Army» along the way to the dungeon was omitted.
It is revealed in A Murder Case in the Area that orange players cannot enter town areas, as they would be attacked by the city's guards. Despite PoH having an orange cursor, he was somehow able to watch the duel between Kirito and Kuradeel in the safe area of Kamdet. This is possibly a developer oversight, though it's also likely that PoH cleared his "Orange Player" status after Laughing Coffin's collapse, as indicated possible in The Black Swordsman.
Episode 7 - The Temperature of the Heart
In the novel, Lisbeth was sleeping in her rocking chair in her shop's terrace when Kirito came to the shop, as she had already finished forging swords for that day. In the anime however, she is still forging a sword for her day's orders.
In the novel, Lisbeth hired a NPC to watch the shop while she and Kirito went to get the ingot from the Frost Dragon. The NPC is not mentioned nor seen in the anime.
In the novel, the ingot was only obtainable after starting a quest and one of the popular speculation about the requirement to obtain the crystal was that a master smith was required to be part of the party for the crystal to drop. In the anime, this speculation is treated as a fact and is rephrased to that the item would only spawn with a master smith nearby. The activation part of the quest was completely excluded: listening to a village elder and picking up the mention of a crystal-eating dragon in the NPC's life story.
In the novel, Kirito gave Lisbeth his coat while they were still in the hamlet where they had to accept the quest. In the anime, as the hamlet part was omitted, he gives her the coat while climbing the mountain.
In the novel, Kirito and Lisbeth actually peer down the pitfall-trap of a dragon nest before battling the dragon.
In the novel, Kirito used «Spinning Shield» to deflect the Frost Dragon's breath attack, while in the anime, Kirito uses an unknown 1-hit Sword Skill, the execution of which is not shown.
In the novel, when Kirito and Lisbeth were falling into the nest, Kirito actually tried to stop their speed of descent by jamming his sword into the wall.
In the novel, before they went to sleep, Kirito and Lisbeth first ate soup and then Kirito told Lisbeth about some of his adventures. This is omitted in the anime.
In the novel, when Lisbeth woke up, Kirito was making tea and Kirito thought of the idea of digging the ground while they were chatting.
In the novel, Kirito rather escaped the nest by holding onto the Frost Dragon's tail, not by using Elucidator as a handhold as the dragon sailed out of its nest.
Although the monster Frost Bone is mentioned in the novel, they do not appear in the anime.
In the novel, Lisbeth does not hint that they left Kirito's sleeping bags and lantern in the dragon's nest. Kirito brushes it aside, saying that they left it there for the other players that would fall inside.
In the novel, after giving Kirito the Dark Repusler, Lisbeth asked why Kirito needed a second sword with similar stats to his Elucidator, and he replied by showing her his «Dual Blades» skill and requested her to keep it a secret. This is omitted in the anime.
In the novel, Lisbeth takes Asuna to a small sidewalk cafe to chat, instead of doing so within her shop, after Asuna asks whether Kirito had said anything rude.
In the anime, when Kirito chases after Lisbeth from the shop, he doesn't mention about his guilt experience with his former guild, the «Moonlit Black Cats», while comforting her with gratitude.
Episode 4 - The Black Swordsman
In the light novel, three Drunk Apes appear, however Silica was dealing with two of them before a third one appeared. In the anime, the three apes simply surround her, with no surprise attacks.
When Pina was killed in the light novel, Silica became enraged and defeated the ape responsible for Pina's death. She was also about to engage the other two apes in a suicidal charge when Kirito appeared and swiftly killed the two apes. In the anime, Pina's death sent Silica into a state of shock, which almost resulted in her being killed by the apes, but Kirito was able to save her.
Though the light novel depicts Kirito in his Blackwyrm Coat, the anime showed him in a different, unnamed coat.
The scene involving Silica in the Inn room is altered in the anime. In the novel, Silica visits Kirito's room and falls asleep on his bed, resulting in Kirito sleeping on the floor. This happens again to him at the beginning of the Fairy Dance story arc, when Suguha falls asleep in his bed, reinforcing Kirito's impression that Silica reminds him of her.
Due to this alteration, Silica and Kirito sleep in separate rooms in the anime, as opposed to sleeping in the same room in the novel.
In the light novel, ten Titan's Hand members revealed themselves, but only nine attacked Kirito, as one member was the guild's eavesdropper and thus needed a green cursor. In the anime, only seven players reveal themselves and attack him, including the eavesdropper.
In the light novel, after the orange players stopped attacking Kirito, they made confused faces until Rosalia ordered them to continue their attack, which they did. In the anime, the orange players were exhausted after attacking Kirito and did not continue attacking him even when Rosalia told them to.
In the light novel, Kirito warned the orange players that if they did not go through the portal, he would paralyze all of them with a knife coated with level 5 poison. The conversation nor the dagger is not mentioned in the anime.
The scene where Kirito opens a portal and jails the Titan's Hand guild members is omitted in the anime.
In the anime, Rosalia did not carry a teleport crystal.
In the light novel, while Kirito throws Rosalia into the portal, she attempted to plead to him for mercy and even attempted to persuade him to join forces with her.
Episode 3 - The Red-Nosed Reindeer
The anime did not show that Klein met Kirito while he was training and that they talked about the Christmas event.
In the anime, Klein and his group were shown fighting off a group of Blood Wolf Leaders on the 28th Floor before the death of the Moonlit Black Cats, whereas in the novel they were training against an ant-like monster on the 46th Floor just five days away from the Christmas event.
Argo does not make an appearance in the light novel, but was mentioned by Klein during their conversation.
The initial story of how Kirito met up with the Black Cats is not portrayed in the anime.
In the novel, Sachi was using a cloak that granted invisibility when Kirito found her.
There was no mention of the shared inventory window between Kirito and Sachi in the anime.
In the light novel, it was stated that Klein negotiated with the Divine Dragon Alliance to have a 1-on-1 duel between him and a member of the Alliance to decide their next course of action. Because of this, only Klein was tired after the match, but in the anime it looks as if everyone in the Fuurinkazan guild fought against the DDA guild.
In the anime, it was not revealed how Kirito got out of the trap alive. In the light novel, Kirito destroyed the treasure chest, thus disabling the trap.
In the light novel, Sachi left the message record crystal in a shared inventory tab between her and Kirito with the timer-activation mode active, instead of a time-triggered mail.
In the light novel, Sachi actually sang the "Rudolph the Red-Nosed Reindeer", instead of humming it.
Sachi did not mention a friend of hers that died on the way back to town in her message to Kirito in the anime.