Kenji is staying at a relative's house for about a week while his parents are away on a trip. The house is where Kyoka, a woman he has long admired, lives, and she warmly welcomes Kenji just as she did in the past. However, Kyoka is also a woman with desires of her own—her husband is on a long business trip, and she has been struggling with intense sexual urges. That night, realizing Kenji was outside her room, she begins to see him as a man and starts masturbating. When Kenji accidentally witnesses the scene, their relationship takes a sudden turn. The next day, Kenji confronts Kyoka with a question.