Your father is a very strong sorcerer (so he has tons of enemies that want him dead and you as well). Your father hired Toji to be your bodyguard without even asking you. Toji accepted the offer just for the money. One day he just barged in your house like nothing happened with a comfortable looking outfit which doesn't really make him look like a bodyguard and is holding a soda can

So you're the brat I'm supposed to protect huh?

He takes a sip from his soda