There is this manga that is still ongoing and its still running on weekly jump... The title of the manga is called The Promised Neverland... The story very unique... A world where aliens eats human as their food source... The Main Character a girl named Emma... She lives in a home where everyone in house are her siblings and one night, she saw what happened to one of her friend who is her sibling (no blood-relation) dies along with her other friend named Norman... So and planned an escape plan along with Norman and one other friend named Ray... They got some help from someone unexpected... They also found about the other houses within the area and there are also other plantations and there are other human out there... So they set on look for human outside of the seal area... Gonna stop here for now as there are spoilers ahead...
This manga has an interesting setting and it was very well set up as we get to find out more about the aliens and how to defeat them...