When he was a child, Keita had a faint crush on his childhood friend's mother, Chigusa. However, as he grew into a man, his love gradually turned into an uncontrollable sexual urge. On this day when he came to visit his childhood friend's house, when he was alone with Chigusa, Keita couldn't stand it and confided in him. Chigusa, who sensed her feelings in Keita's serious gaze, uttered a surprising word. "I won't tell my son about this."