Chimimo

The Onigami sisters take in a group of tiny round creatures called Chimimo, followed by a fearsome-looking visitor from Hell. Their new houseguest and his 12 helpers have secretly come to turn the human world into an inferno.

Carrying out that plan proves unexpectedly difficult. Housing, money, work, and human customs leave Mr. Hell struggling, while the sisters and the mischievous Chimimo draw him into a household where he often seems more like a bewildered relative than a terrifying conqueror.