This is a want ad for Monaka Towa from Danganronpa Another Episode: Ultra Despair Girls! In canon, Monaka is... more than a little nuts, and incredibly dangerous. She's basically the mastermind for what she and the other Warriors of Hope in canon call Paradise, where they plan to kill all the adults in the city (and eventually the world), but Monaka has more plans than that.
On Bomb, Monaka might be a little harder to translate, but the general gists I've been going with are these!
-She's Nagito's younger sister, but the oldest of the group- she's 17, the younger ones range 14-16, all adopted.
-Shes a Beauxbatons Elite and a powerful witch - she might be in for skill with technomagic, charms, arithmancy, wand lore or magical theory? Or she could have bought herself in.
-In canon, she uses a wheelchair she doesn't need because she's faking paralysis- but in this it might be better to just keep her in it, if you'd like that, or find another way to translate it?
-Precocious, at least one step ahead of everyone else around her, but plays up her cuteness level to avoid suspicion. Hates most people, tbh.
If you have any other ideas/suggestions, totally toss them out! Or actually, even if you'd like to make a part of Nagito's family and would like to use a different spirit/have a different idea, I'm super down! I've just been going with Monaka because why not, tbh. The only thing I actually have set in stone/use in any impactful way is that his siblings are all purebloods and blood purists, and can be extremely cruel and even violent to themselves, their brother and everyone else around them - so tbh if you'd like to play some form of bully character and have them be siblings, that would work super well!