🧒Child Protagonist

When Demon Slayer's ruthless Muzan Kibutsuji turns a child named Kocho into his first demon and adopts her as his heir, the terrified Upper Moons must babysit a tiny insect-wielding demon princess who could doom—or save—them all.

In the world of demon slayers, a five-year-old girl cursed with Lower Moon One's power creates nightmarish insect species that terrify both humans and demons—while her child's mind still dreams of playing with pretty butterflies.