One day, her son came to visit accompanied by his friend Kousuke. Mariko, a married woman worn out by her monotonous daily life, accidentally laid eyes on his strong, alluring body and felt her heart racing. Unable to resist his temptation, she impulsively reached out to touch him—and in that instant, she was swallowed by his endless lust. Day after day, Mariko found herself returning to him, gradually becoming obsessed with his sensual charm. However, as she grew increasingly exhausted by his insatiable sexual appetite, she eventually reached her limit...