Due to her husband's unstable income, Aya began working part-time as a private tutor to support the household. However, after years of a sexless marriage, she ended up losing her virginity to her student, Yutaka, when he made advances on her. When Yutaka's father discovered the affair, he demanded Aya submit to him sexually. Reluctantly agreeing, Aya found herself surrounded by the man and his friends, three erect cocks closing in on her. Penetrated deep in her mouth and impaled in her wet pussy, Aya experienced an ecstasy unlike anything she had ever known before.