Ozawa, the chairman of a large company, is 27 years old and is worried about his job and the virgin son of a window family. - One day, she suddenly thinks that things might change once her son gets married, so she plans to arrange a match. - After introducing several women from prominent families, my son takes a liking to Sumire, the daughter of a business partner. - However, Ozawa also plans to make Sumire his own. - Ozawa semi-forcibly allows her to date his son, and further forbids premarital sex until marriage. - One year after they started dating, Sumire's sexual desire was gradually pursued, and she carried out her plan on the occasion of her son's business trip...