If you loved The Demon, try Dojoji Temple
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Kihachiro Kawamoto, and they both carry the body horror, dread, surreal mood tags, and they sit in Animation / Fantasy / Horror territory. If that's the register that drew you to The Demon, the second film will land in a comparable space — through a different lens.
What Dojoji Temple is
Bell of Dojoji. Nightfall. A mosquito. A traveling priest seeks shelter, finding only a woman's spare room. Their brief entanglement ends with the monk fleeing into the wilderness. The woman transforms, pursuing him relentlessly. Kawamoto's stop-motion puppet phantasmagoria is best viewed as nightmare fuel.

