Kenji's parents went on a trip, so he stayed at his relatives' house for about a week. There, he found Kyoka, whom he had been in love with for a long time, and she welcomed him with the same kindness as he remembered. However, Kyoka was also a woman... Kyoka, whose sexual desires had been building up due to her husband being away on a long business trip, couldn't help but think of Kenji as a man, and masturbated that night... Kyoka noticed Kenji peeking at her, and she showed him how she was masturbating, climaxing... And the next day, Kenji, who seemed to be acting strangely, told Kyoka...