Responses
He isn't biologically his father. He just took care and took him in at a young age. In Vl.1 Ch.5 around the middle should explain. Hope that helps ?!
the former yakuza boss is the scar guy's adoptive father/guardian. so yes, he is his father but not his biological one.
Is the Former yakuza boss the scar guy's father?.... cause he keep calling his reincarnation "father"