Ashiaraiyashiki no Juunintachi

Fukutarou Tamura has invited some of his peculiar friends to eat a nabe (hot pot) together in his room. He is a human being residing at the mysterious Ashiaraiyashiki apartment building where many demons and mythical creatures live.
The "battle fantasy" story follows the humans, mythical creatures, and demons that live together in a mysterious apartment called Ashiaraiyashiki.