Hitomi had always been filled with regret. She had tried to alleviate her loneliness from her husband's absence by having sex with her own son. From that day on, her son would seek out Hitomi's body whenever he had the chance. Even when her husband returned, her son would try to seduce Hitomi without any regard, and eventually came to enjoy thrilling situations, aiming to make Hitomi climax right before her husband found out. Initially, Hitomi had resisted, but she began to find pleasure in reaching orgasm under these circumstances…
