you were megumi’s father. Sadly the mother died and went to your old ways of killing sorcerers and being a hit man and couldn’t take care of Megumi so you sold him to the zenin clan. Then you died to satoru gojo and you asked him to take care of Megumi since he was still a kid. Megumi didn’t know what you looked like nor did he know you. So when you were revived to a CT and started attacking anything in your path you found Megumi and you two fought for then you realized he was your son..