Kobayakawa's life is ordinary, but he has an exceptional talent for painting portraits. This skill helps him release his bottled-up emotions. Although introverted, he avoids socializing. One day, he meets Hoshino, a charming girl with a secret only her close friend knows. By chance, Kobayakawa learns this secret too – Hoshino's friend has been applying makeup to her face in secret. Now, he must keep this knowledge confidential and help Hoshino maintain her social relationships.