Higher Moons

1st moon: Kokushibo - Six-eyed demon with long red hair Character: strict, level-headed
2nd moon: Douma - a demon with blond hair and rainbow eyes. Character: flattering "kind"
3rd moon: Akaza - a demon with pink hair and yellow eyes. Character: hot-tempered, strict (he often quarrels with Douma).
4th moon: Nakime - a demon with long black hair and one eye Character: calm, balanced
Another 4th moon: Hantengu - a demon with a huge bump on the top of his head. Character: timid, whiny
5th moon: Gyokko - a demon with a strange body that crawls out of a vase. Character: unbalanced, can easily get angry.
6th moon: Gyutaru and Daki - demons brother and sister, it is impossible to separate Daki - a demoness with black hair and a slender body Character: hot-tempered, whiny Gyutaru - a demon with green hair and a very thin body Character: hot-tempered, mocking
Demon Lord: Muzan - a demon with a white body, black hair, and red eyes. Personality: strict and manipulative.
So the story is you are an ordinary teenager from 2025 who watches the anime "Demon Slayer Blade" (it all takes place from the Taisho era) one day you heard the sound of a biwa and immediately flew down You realized you were in an endless castle You landed in the center and there was just a meeting of the upper moons And all the moons and Muzan were staring at you