Ogasawara Hiroki's average life was turned upside-down the moment he became a babe magnet for a whole harem of sexy succubi. Hiroki has managed to court the attentions of a famous businesswoman, a talented idol, a beloved actress, an up-and-coming tennis prodigy, and he's even attracted European royalty. Hiroki's life is a busy one, and there's never a dull moment: something which becomes even more apparent when Yue, the ruler of the succubus realm, barges into his house and asks for his help...