Yuji, who visited his relatives' house for the first time in five years, was excited by his aunt Rinko, who was full of feminine charm. When Yuji found her underwear that had just been thrown away, he indulged in masturbation while savoring her scent. When Rinko saw her underwear stained with her nephew's semen, she seduced and played with her young body, saying that this was a secret between the two of them...