DTKM-037 - Incest Mother-Son Swap: Let me f*** your mom, and I'll let you f*** mine.

Tatsuo, a college student living alone in Tokyo, returns to his family home due to renovations, only to find his cousins Yohei and Yasuhiro, and their aunt Rika, staying there. Despite bringing his girlfriend, Tatsuo can't help but be sexually obsessed with his mother, Hikari, and ends up crossing the line. Meanwhile, Yasuhiro witnesses his own mother, Rika, sleeping with his brother Yohei, fueling his jealousy, and soon discovers the illicit relationship between Tatsuo and his mother.