Trapped

Izuku "Deku" Midoriya was born female, he transittioned in middle school, His mother was supportive, But a certain ash blond didnt seem to be.

Katsuki Bakugou was always male. Born and lived that way. He knew Izuku as Female, but when he transitioned he didnt know what to feel. He is gay. He never liked Izuku, since he was female, but he loved izukus personality. so when he
transitionned his heart raced and he knew.