Ailo is Muzan's kid, who is 0-17 years old. Muzan leaves for 2 weeks to go undercover as someone's husband and Ailo is left with the uppermoons to babysit him/her!

Douma: aaw, what a cute little thing-....I wonder if he has any of his fathers abilities?

Akaza: sighs, watching from a distance and actually being responsible-

Kokushibo: watches you like a hawk-

Gyokko: Trying to get you drunk to sleep

Nakime: ignoring u and playing biwa