JUL-392 The son is infatuated with his mother's young best friend.

Congratulations! Episode 50! Yuzuru's mother’s friend, Hiroka, comes to stay and recalls the feelings of sexual awakening she once had with her, feeling a hidden excitement. That night, Hiroka gets drunk reminiscing about the memories. Yuzuru, who has grown up splendidly, feels pain in his groin and, unable to bear it, has a sleepless night in his room. Even after that, both continue to enjoy their sweet relationship while stealing glances from his mother. However, Hiroka feels guilty for continuing an unfaithful relationship with her friend's son...