Mitsuki is a schoolgirl who never wore makeup before. She is touched by her teacher's kindness and starts studying makeup in the hopes of getting the attention of her teacher. Her days change little by little thanks to the makeup. The girl becomes cuter thanks to the makeup and confesses her feelings to her teacher, leading to forbidden sex at school. A Cinderella story of a girl in love, where a plain girl with no makeup changes with the help of makeup.