Aika's husband is always busy at work, so he has not touched her for half a year. She always feels lonely and sexual desire. There was no other way she had to masturbate herself to partially feel this sexual deprivation. When she masturbated, she suddenly saw Sagawa-san outside the window looking at her. Sagawa-san was a newcomer to live in her side. He gave her a friendly, approachable and extremely comfortable feeling. Sagawa-san is a photographer, but recently the form is not good, so his works are not as good as he expected. Meeting Aika made his passion and creativity once again awakened. He asked Aika to be a photo model for him, he kept praising her beauty that Aika did not accidentally refuse. Since then Aika has modeled for Sagawa and the two of them gradually became closer. He constantly praised her, the compliments that her husband had not told her for a long time. She feared that she would not be able to control itself to make a mistake with her husband. She talked to Sagawa as a model for her husband to hope that her husband would stop her. But no, her husband did not seem to care but agreed immediately. And then the fire near the straw for a long time burned, what she was most afraid of finally happened ...