Danganronpa

The widely popular series of games and it's anime spin-offs are chock full of great characters, especially the female ones.

Since the series involves high school students, they will be aged up for these chapters.

The plot follows a group of (usually) sixteen high school students with Ultimate skills trapped in (usually) a school and to kill one another to escape, then solve said and if they fail then everyone but the killer dies.

That was just a simple explanation of the series, it gets much more complicated including games within games within games.

What happen to the chosen group of Ultimates? Let's give it everything we've got! It's punishment time! Puhuhu....