The ideal type is an older brother, and I genuinely want to marry my brother in the future—a hardcore brother complex! My brother also thought it was normal to go on dates with his cute little sister, sleep together, and bathe together. However, recently friends have been telling him "that kind of relationship is weird," making him feel embarrassed by his sister's affection and start treating her coldly. "Maybe my brother hates me now?" feeling anxious and sad, Mirei explores her brother's room to become the type of girl he likes. There she finds a magazine featuring cute girls in Lolita fashion! "No way, my brother likes girls like this!? If I dress like this, he'll definitely like me again!" slightly airheaded and offbeat Mirei dresses up in Lolita fashion, using all the erotic knowledge she found online to launch her 【Operation: Make Him Fall Head Over Heels for Me】 (Mirei is a virgin with no real erotic experience). Bondage, ejaculation control, forced urine drinking, and even demanding "Brother, take my virginity" incestuous sex! Of course, spontaneous ejaculation is not allowed. And to completely make him hers, she will take her brother's virginity. This is the slightly twisted tale of a pure sister who loves her brother too much.
