My hero Absolute

most fanfics already do... in general direction at least. It would be a big bad evil in HPSC, possibly with AfO running it behind the curtain, instead of chaos seeking terrorists without a plan. It would be rampant running of the discrimination cults, social classes themes, inner heroes corruption (something we don't REALLY see in mha. Like, heroes who would run a child trafficking. There are glimpses, but it's not a systematic problem, rather an individual problem).

If you want a particulars, then what i can think of Ochako, who lost her father, have to step up to keep helping her mother with the bills goes to criminal work for survival. Izuku who was there when All Might died and was accused of killing him now runs from the government without mentor, with all the power and no support system or training. Shoto's father, Endeavor, was murdered when he was young. Living with still not completely sane mother and his siblings he goes to discover a criminal conspiracy Enji was tied to. All Might is a pupet, who is forced to pose and figuratively is held on by the balls, with the threat of mkre damage can fight only those he is pointed at, most of the time having to play by camera like he is a Vought hero. Bakugo's quirk was taken, before he was able to show it to anyone. Now trying to figure out the conspiracy of the Quirk Boogeyman he mets his enforcer. An old man with the rocket boots who tries to shut his investigation down. Asui has to raise her sibling while living with the Beast Supremacist clan. Momo has to run from home as she is being puppeted to be a "perfect heiress" by her parents.