Kurosaki looks like a black gyaru but is a highly capable manager, while Hayashi is an inept subordinate who constantly relies on her help and secretly longs for her. One night, a drunken Kurosaki transforms and sleeps with him. When she later claims she remembers nothing about their first night, Hayashi is confused but continues growing closer to her. By day they appear to be a cool boss and her innocent subordinate; by night they become lovers who seek each other out with fierce desire. Their private relationship begins, filled with contradictions between appearances and true feelings.