Misono "Kill All Gehennoids" Mika — Kivotos' funniest, racist, war criminal (it was just a joke bro I swear)
-One of the three political leaders of one of the biggest schools in Kivotos (Trinity)
-So obnoxiously boisterous that her childhood friend (also one of the three leaders – Nagisa) is embarrassed to have her around, and the other leader (Seia) basically tells her off for being so obnoxiously retarded
-Gets so butthurt over being told off that she decides to "play a prank" on Seia by
nearly getting her killed by terrorists via bombing, attempts to kidnap Nagisa (the terrorists were going to kill her too despite what Mika wanted), and ultimately sabotage a peace treaty Trinity was gearing up to sign with its rival school (Gehenna) because she
really fucking hates Gehenna
-All of this leads to a really convoluted plan that she eventually reveals herself to be the mastermind of, which gets thwarted
-All of this
still leads to a terrorist attack during the day of the treaty signing that nearly results in all-out war + the summoning of a bunch of ghost nuns to attack both Trinity and Gehenna (there's a lot of other plot-relevant things going on in the background and it would make this summary significantly longer if I were to get into it)
-This also leads to us
getting shot and nearly fucking dying (it's okay, we get better)
-This also leads to most of Trinity declaring her a witch, raiding her room, and trashing and torching almost all of her personal belongings while she's being held in custody
-This leads into Mika suffering a full on mental break, blaming the leader of Arius Squad (Saori) for all of her problems, and going on a retard gorilla strength rampage (no, really, she easily breaks the bars of her holding cell and smashes through several solid walls – something which most other students
can't do – while also single-handedly tearing through multiple well-armed groups) to hunt her down and kill her (she ultimately spares Saori after beating her nearly to death and then has a slight "redemption" arc)
-On top of all of this, all of her actions essentially result in a reality-destroying eldritch entity "perceiving" our universe and nearly destroying Kivotos in a massive "doomsday" situation a bit later on
-Despite the severity of her wrongdoings, she basically gets a slap on the wrist, reduced political privileges, put on official probation, and has to spend the rest of her days living like an average student
-As far as we know, even if she is currently making up for her wrongdoings,
she still really fucking hates Gehenna and should probably be kept away from Gehenna at all costs
-Still acts like a spoiled, obnoxious princess despite all of this

She can't keep getting away with it.