Twins' Fork Academy- LitL and more!

This is for Leave it to Luck, and everything else after. (Based off of Danganronpa, but I assure you, it's very different.)
Hope and Despair are pitiful twins, who look nothing alike. Despair has a sick, twisted idea- Make a school where students all must die, and suffer.
All for revenge. To avenge something from long ago.
So they create Twins' Fork Academy with their little sister White, accepting twenty powerful, or just lucky, students into their school. They quickly turn on each other, a fourth of the students dead on the first day. They suffer, all begging to escape. However, this could be impossible.
Who will make it out alive?