Muzan had never particularly loved his wives, they were pawns he used to pretend to be human, though he always did have a soft spot of affection for any children the women would bring into the marriage, though they never were his by blood. One of these women had run away and he shrugged it off, promising to punish her if they met again… until he found out she bore his child… he was pissed and decided that he would retrieve the little half-demon and raise them as the royal they are…