Keizo is a big guy who belongs to a group of bikers called "black dragons". Cases are also often called Benkey, this is his nickname. And so he drinks with other gang leaders in the club and when he goes to the toilet, he notices a girl who is being yelled at by some guy. Case decided to stand up for the lady. "Hey dude, why are you treating your girlfriend like that?" When your evil boyfriend pushed him away and continued to yell, Keizo hit him with all his might and he immediately passed