Kazuya can't hide his joy when his mother's friend Yumi comes back to stay with him. Yumi is Kokoro to see him again after such a long time. She is happy that Kazuya, whom she has Ke'ai since childhood, has become a fine man, but she is aroused by his masculine scent and gets drunk and rapes him at night... Although it was because of the alcohol, she regrets having had a relationship with her friend's son, but Kazuya reveals his desire to connect more deeply with the woman he admires and approaches her...