Sara is so sensitive that she climaxes quickly. When she climaxes, her husband reaches his limit and stops having sex. Her husband is not satisfied with their married life, and one day, he bumps into a man from his former part-time job and they go out drinking. However, Mine is excited by the drunk Sara's defenseless eroticism and ends up violating her. However, despite being violated, an indescribable feeling begins to grow in Sara. On another day, Mine continues to have sex with Sara. Sara falls into a quagmire. When Nobu comes home from work, he witnesses Mine and Sara's relationship, but he is too timid to say anything. Sara's sexual intentions with Mine gradually change. Although she was unable to tell him about her relationship with Mine, her husband was frustrated by Sara's rapidly changing behavior, but he became addicted to her sexual acts...