Akira harbored a secret crush on Chisato, his friend Shinya's mother, who was far more beautiful and kind than anyone else in his life. One day, Akira accidentally discovers Chisato masturbating in the bathroom. Realizing that the woman he adores is not thinking of him, Akira is overwhelmed by a deep sense of betrayal. Yet unable to suppress his emotions any longer, he confronts Chisato and confesses his feelings.