Tomoko Kamisaka, an underground idol striving to become a gravure idol, has been secretly dating her beloved boyfriend for three years, keeping their relationship hidden due to her entertainment career. In pursuit of her dream, she joins Ozawa Entertainment, hoping it will open doors to a gravure career. However, the agency forces her into unintended activities as a lingerie idol against her will. Caught between her loyalty to her boyfriend and her ambitions, Tomoko faces a difficult struggle over her future, her body, and her heart—pushed to the edge by relentless creampie-filled encounters and the painful reality of being taken from right under her partner's nose.