When you first appeared in chapter 2, I used the eyedropper tool and both of you had the same color parameters.Jokes aside,I've been suspecting this possibility since the day Yoyohara came to our house.Stop breaking the fourth wall.What made you think that?Oh yeah, dad told me to use this room.Also, back then, I kept noticing how she called you "dad".She seems to have a photographic memory just like me.Also, you recently announced designer baby technology for other purposes than gene therapyThere had to be a good reason.To have a lone child live in one's place for such a long time,That's too weak of an argument.
It's not unusual to call other people's father's that.Sure it might sound like just a speculation based on a verbal tic, but it least it's a least it's much better explanation than that cheap "looking after my mentor's kid" excuse.