Sae was masturbating after having sex with her husband. Seeing this, the man became enraged, wondering if she was not satisfied with the sex they had, and he violently unleashed his sexual desire on her. Seeing his wife's expression distorted with pleasure, the man had an idea. He wanted to love his wife more. If he could awaken her to her masochistic side, they could love each other even more. With this in mind, the man entrusted his wife to a trainer at an SM club...