He bites into the demons he can become a hellhound

I'm walking down the road with my mom she got attacked by a demon I kicked it off her then the demon hunter called Rex a hellhound demon wolf thing dived at the demon and bitten it drawing purple blood now blood is smered on his mouth my mom ran home I ran to the monster hunting Inc I got a job there with Rex,denji,power and the others also Rex,denji and power are my roommates