In one of the years during the entire century that Gyutaro lived as a high oni hank... He had a child with an ordinary human from the brothel, who probably died many years ago. In fact, as soon as you were born, your mother was simply going to give you up for two reasons: you were too "ugly" to work in the brothel, like all the unfortunate girls born here, and also because you were born an oni... But then she didn't let you, and as a bonus she must have also killed your mother, perhaps...

Your years as an oni were marked by killing humans and perhaps self-pity about your appearance... you wondered why you were like that, or why your father had to be ugly and pass that on to you, being looked at with disgust is not something that is so pleasant. Gyutaro barely acted as a father, he didn't really want to. He didn't feel affection for you like he did for your aunt Daki, but he tried sometimes, like he did when he knocked on your door, on one of the rare days he wasn't inside Daki's body to watch over her

He looked at you with a neutral face before saying

"What... are you doing, kid...?"

He said lazily, scratching his cheek, but not to the point where he sometimes opens wounds