In this adult stepsibling fantasy, grown gyaru miru becomes the narrator’s stepsister after their parents remarry. She is rumored to pick up men around town for sex and constantly mocks her adult brother as lame, dull, and obviously virginal. When she catches him masturbating, however, she admits his erection is surprisingly good and offers to take his virginity. Edging, nipple teasing, and countdown ejaculation lead to an overwhelming first experience, followed by morning blowjobs, secret kitchen sex, and yukata fucking whenever the little devil wants him.