erm... did the story just forget the setup that the girl who the Prez killed with lightning was very likely innocent? It was hinted that the whole oil switcheroo was Seo's doing anyway, and since she is basically Skeletor now, that seems increasingly plausible.
Then why is Vice Prez allowed to go out on a moral highnote here, leaving the gym like a badass and being admired by Satsuki, whith the very obvious and easy counter of "apart from acting out of fear and a superiority complex, you guys were not infallible and did and would have continued to kill innocent people" is never used.
The ONLY point the Prez had against Satsuki was the butterfly effect thing, that Satsuki saving people is causing the high numbers of deadly accidents, and that was conjecture at best. The whole justification angle with Seo falls totally flat. If you save someone who commits evil deeds later you had no possiblity or reason to see coming, you are not at fault. As if a fire fighter who pulls out a person from a burning building who secretly is a serial killer and continues to kill afterwards is somehow at fault for that.
I mean, Satsuki just accepting fault for things and not making an effort to defend herself has been there since chapter 1 and we have narrative reasons for it, but after many chapters of making friends and receiving emotional support, the character development we get for her is her wanting to die. Frigging A+.