kaisan - A kaisan is someone who will beat you up for making fun of t

A kaisan is someone who will beat you up for making fun of them but will protect you from the whole school if you need it.

Text: 'You laughed at me? I’m gonna beat you up.'

Tweet: 'He took on the whole football team for me.'

DM: 'They called me a nerd. I beat them up. Then I saved you from the bullies.'