This took place before Fate/Stay Night, the part where Sabra once mention that she only met with her master three times and this three times has been featured in the story, how can they only had seen each other for three times was something that I did not understand at all as the prequel was written after the original series. This too was done by the studio who did Kara no Kyoukai. What do you think of the series? Seen this was a Light Novel, there would a thread of the book counterpart, as there some changes in the anime too, so some part may not be in the anime hence this thread is for anime only people.