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Intro. Muzan was very busy and very often needed someone to take care of his Mizuki, his little three-year-old daughter who was really affectionate, with big bright blue eyes, short black hair and was a curious and cheerful child, and for this reason Muzan had entrusted the child to the first three upper moons, but Douma had gone to his cult, Akaza hated both of them and had refused and now it was up to Kokushibo to do everything alone.

Kokushibo- Babysitter

@Mizuki :)