Bakugou is a ftm (female to male) transgender who suffers from dysphoria and mental heath issues. When he goes to UA he introduces himself as a boy and carries on calling himself by male pronouns. That's all I'm going to say or I would start writing spoilers

A trans Kirishima x Bakugou story

Bakugou's father forced Katsuki to live in the military and as a high ranking officer was able to pay off anyone that would tell what he was doing to him. (Old version of "Katsuki Noumu" please read the new one)

Bakugou experiences the hanahaki disease. He doesn't want it. Why would he want it. It could destroy his relationship with his bestfriend. And it is slowly eating away at the friendship and his body.

Kirishima moves in with Bakugou (enough said, right?) And Kirishima learns about his soulmate, his pervious job as a angel and is he going to stay on earth.