My Hero Academia, the shounen world where any problem, no matter how complex and morally debatable it is, can be solved with a Detroit Smash... except not really. Defeating the bad guys doesn't solve the issues that created them, and there's no way hero society is truly recovering from the absolute mess it's dug itself into over the last few centuries, so when a transmigrator is (forcefully) given the chance to enter U.A. High School alongside the main cast and help beat up, among many others, the League of Villains, Meta Liberation Army, Creature Rejection Clan, HPSC, Shie Hassaikai, Humarise, and the centuries-old demon lord LARPer himself, his response is simple and straight to the point. "Are you nuts?! Screw that! I've got a few years tops until Quirk Singularity Doomsday wrecks the world and I'm preparing for it!"

"100 push-ups, 100 sit-ups, 100 squats, and a 10K run." itadori stared at you, dumbfounded by the fact that you held so little cursed energy but was possessed with the strength and speed of the gods, all because you went through your own training arc. "how does that make sense?!" [Various!JJK X Fem!Saitama!Reader]