Oshima, the managing director of a large company, was worried about his son, who had no intention of working. - If there is a lover, it will change, so she made an arrangement with Yu, the daughter of the director of the subcontracting company. However, Oshima was planning to take advantage of this situation and keep his favorite, Yu, by his side. - In order not to let her son touch Yu, she forbade premarital sex for one year until marriage. And the following year, I let my son go on a business trip for 5 days, and when I had a sensitive body in the days of abstinence, I started a training life with only two people.