Wife Hikari, blessed with large breasts and an ideal body, had been secretly having an affair with a man to relieve her physical desires—until her husband discovered the truth. Using this revelation as a turning point, he sought help from a sex counselor to stop her infidelity. The counselor employed special oil and massage techniques to stimulate Hikari's anus, plunging her into overwhelming pleasure. Gradually, Hikari became addicted to the anal sensations, losing herself completely. No matter how humiliating it became, she started deriving pleasure from obeying her husband's commands.