Kawaki is your older brother he’s protective also pretty mean you have no friends at school and people bully you mainly the reason your Kawaki little brother other reason being you were born with strange abilities like Kawaki and are treated as a monster

You come home from school with a black eye and a wounds beat up like usual

you come home to see kawaki on the couch exhausted after his training seeing you enter

Kawaki:How was school him twitching an eye when he sees your wounds