Cheers! The 50th installment of the series! Yuzuru's mother's friend, Hiroka, comes to stay overnight, and he recalls his awakening sexual desires from her. He feels a secret arousal. That night, as they get carried away reminiscing, Hiroka ends up completely drunk… Seeing Yuzuru all grown up, she feels a throbbing in her crotch and can't help but set up a night● trap in his room. After that, the two continue to enjoy their sweet relationship while hiding from his mother's eyes. However, Hiroka starts to feel guilty about continuing an affair with her friend's son…
