A molestation drama is born in which an uninterested liberal arts girl is transformed into a lustful sex-lover after having aphrodisiac oil smeared on her buttocks. Tsubomi, a quiet girl who wears plain clothes and loves reading, becomes the target of a molester and has semen thrown over her on the train. Although she didn't feel good at all, the next day, the molester begins to feel a glimpse of pleasure due to the aphrodisiac effect... and her awareness as a woman and sexual desire are awakened...