This role-play is performed by adults. I decided to keep my niece, a female student, at my house for a while. In the past, he used to be cute and say things like, "I'm going to marry your brother," but after we haven't seen each other for a while, he gets really cocky and won't even listen to me. Even now, instead of eating the food I prepared, he is lying on the sofa and engrossed in a smartphone game. ...Hey, I can't see your pants. I don't know if you're defenseless or don't see me as a man, but I'll teach you what will happen if you show off your cute ass like that!