Soukan Syoukougun: Boku Dake no Mesumama

Kento's father returns from a long business trip, and the family gathers for a reunion. That night, curious about strange sounds from his parents' bedroom, Kento peeks in and witnesses his parents in a sexual act. He sees his mother not as a parent, but as a lewd woman, her body trembling with pleasure.

Consumed by newfound carnal desire, Kento becomes obsessed with embracing his mother. He struggles with his taboo feelings, torn between his role as a son and his awakening lust. The line between family and forbidden attraction blurs as he pursues his mother.