Kosuke was staying at his friend Tetsuya's house when he was introduced to his mother, Rei. Kosuke couldn't help but get excited when she exposed her voluptuous body and approached him defenselessly... Rei noticed Kosuke's gaze and gave in to her pent up sexual desire during her husband's long business trip, and started to eat him up. He was an insatiable stamina that never seemed to die, no matter how many times he ejaculated... At first, Rei enjoyed his unstoppable cock every day. But before she knew it, her body was screaming in pain from her limitless sexual desire...