Nozomi was left in charge of her best friend's house while they were on a trip together. They had a son, Atsushi, at home, but he was still a child. Nozomi was not interested in men. However, that night, Atsushi witnessed Nozomi masturbating and his attitude changed completely. Seeing Nozomi's indecent state, Atsushi impulsively attacked her and begged her to let him fulfill his long-held desire. Naturally, she refused, but she was seduced by the young man's pure Kokoro and powerful erection, and her resistance gradually weakened...