Tomoko dreams of becoming an idol, with a slightly flirtatious gyaru charm and an adorable overbite that adds to her appeal. A man takes her under his wing, passionately guiding her toward stardom. But his training grows increasingly intense, gradually shifting toward something far more sensual. As his fervent instruction pushes her limits, her heart and body begin to tremble. Is this really training to become an idol—or something else entirely?