"K-Kacchan..?" -bakudeku

Katsuki Bakugo has been depressed since middle school, it hasn't stopped. He has panic attacks pretty often. He stays to himself and cries. Sometimes he would cut himself, or burn himself with his quirk. He tries to keep it hidden but a close childhood friend knew him to well. What happens next? Read to find out.. {Warnings: self harm, detailed smut, gay, there may be more i will add later.}