Akito Ōno is an ordinary salaryman whose life takes an extraordinary turn after he saves a woman from an attacker. Immediately afterward, his body suddenly begins to glow, and before he can understand what's happening, Akito finds himself transported somewhere completely unfamiliar. Even stranger, he's surrounded by a group of beautiful young women whose appearances make it obvious that they aren't human. Akito has been summoned to another world inhabited by demonfolk, and the mysterious ritual responsible for bringing him there apparently wasn't intended to summon a legendary Hero. Instead, it was supposed to produce someone's “ideal” partner. Now the lone human finds himself working as the manager of a girls' dormitory populated by demon girls, each with her own personality, peculiarities, and growing interest in their unusual new caretaker. A fantasy harem romantic comedy about an ordinary salaryman accidentally summoned into another world and becoming the human manager of a dormitory filled with demon girls.