Someone called the paneling horrific, but I quite like it. It does create a different sort of artistic dynamic for the story. Sure, I wouldn't want this sort of composition for all of my manga, but if it's this one story, it works. The photo-edited backgrounds are unfortunate, though. I wouldn't have ever imagined I would say such a thing, but I might sooner take simple AI created backgrounds than photos half-assedly thrown through filters.
I don't remember if I have seen before this kind of situation where the MC needs to make another person go through physical rehabilitation as well. Merely saving other source material antagonists is nothing new, naturally.