Even after seven years of marriage, Yuko has not been blessed with children, so she undergoes infertility treatment. While making her husband wait in another room, she lets out a sweet sigh as the doctor examines her genitals. Excited by her voice, the perverted doctor stimulates her sensitive parts violently under the pretext of treatment, and Yuko, unable to suppress her sexual desire, finally accepts a raw cock several times larger than her husband's, and has sperm ejaculated inside her. After that, Yuko becomes addicted to the doctor's techniques and becomes an unfaithful wife, sucking on his penis right next to her husband...