Kaori, 28 years old. she's a newlywed living in setagaya ward. After graduating from the Women's University, he worked at a major preparatory school and still works as a lecturer. He is not dissatisfied with his husband, and fears that the marriage system will deprive Onna of her freedom. The reason he applied for an affair this time was because he thought that if he lived as a housewife, he would regret it in the future. "I don't want to go to luxury hotels or hot springs. Anyway, I wanted to make a stimulating and exciting trip."