Jashin-chan is a demon summoned by Yurine Hanazono, a girl with a gothic appearance. Because the summoning grimoire lacked the spell to send her back, Jashin-chan resorts to violence in an attempt to free herself from her earthly bonds. However, this proves easier said than done, as Yurine is no weakling. She possesses formidable physical strength and uses it to massacre Jashin-chan in various ways, such as shoving her arm into a blender, spreading her intestines across the room, or even cooking her. While these actions would be fatal to anyone lacking regenerative abilities, Jashin-chan is not exactly undeserving of such treatment. Forced to stay together, Yurine allows Jashin-chan to live with her in exchange for chores around the apartment, a cohabitation that results in situations where, more often than not, Jashin-chan ends up in pieces.