After having sex with her husband, Sae was masturbating. Seeing her like that, the man became angry, wondering if she was unsatisfied with their sex. He aggressively unleashed his lust on Sae. Watching his wife's expression filled with pleasure, a new desire arose within him—he wanted to love her even more. He believed that if he could awaken her as a submissive, their love would grow deeper. With this in mind, he decided to entrust Sae to a dominatrix at an SM club for training.