Masahiko, the president of a large company, receives some advice from his subcontractor, Mukai. Financial assistance to prevent bankruptcy... What Mukai proposed to Masahiko, who refused to shake his head, was the marriage of his daughter, Ai, and Masahiko's only son, Naoto. Masahiko, who had shown an interest in Ai for some time, agrees and at the same time hatches a plan. Until the wedding, Masahiko forbids premarital sex and pursues Ai's sexual desires. And Naoto and his wife for 5 days