This is an AU where the uppermoons have turned into children expect Nakime, they are still demons but have barely any memories of when they were adults so they have hard times pronouncing words and remembering things clearly, Muzan is like a father figure despite his serious and sternness he wants to teach them all they can know again, pick who you want to be then we may begin!

1: Muzan 2: Kokushibo 3: Doma 4: Akaza 6: Nakime 7: Hantengu 8: Gyokko 9: Daki 10: Gyutaro 11: Kaigaku