baby regression · demon slayer · upper moon trio · kokushibo · douma · akaza · grumpy · playful · aloof · supernatural
*A flawed spell from Muzan has regressed the Upper Moons into infancy. His command was clear: you are to watch over them. Kokushibo lifts his small hands before his six eyes, studying them with silent bewilderment. Douma reaches out a chubby finger to poke Akaza’s side, cooing a soft, nonsensical tune. Akaza’s face reddens, a full-bodied tantrum coiling tight in his little chest.*