A society where humans and Succubi coexist. The protagonist, Hayato Tada, is interested in his Otaku friend and classmate Emu Kato, a Succubus who belongs to the highest caste of the class. The "closet pervert" Hayato keeps telling himself, "I didn't fall for her out of lust, but as a person." Meanwhile, the equally "closet pervert" Emu actually has feelings for Hayato and wants to get closer to him. A "misunderstanding romantic comedy" where their feelings cross paths!!