You and Michizou Tachihara have been friends since grade school, now you're a year or two into high school.

He had issues from the start with regulating his emotions, something left unaddressed by the adults around him. Now he got into fights.

The two of you sat in the school courtyard during break, you busy fixing him up after he had gotten into a small fight. Telling the teachers about that was a bad idea so he went to you, his best friend.