Atsushi lives with his father's new wife, Kotomi, and the three of them are his family. Atsushi thought his stepmother was very plain, wearing black-rimmed glasses. However, one day, when Kotomi came home drunk, Atsushi was pestered by her. He took off his glasses and peeked at her sleeping face. Seeing her beautiful sleeping face, Atsushi became aware of Kotomi as a woman and played with her ripe body as his desires dictated.