Akira and Ruriko on their fifth year of marriage. One day, Akira brought a flyer for a chiropractic clinic to Ruriko, who had been suffering from stiff shoulders. Eagerly, Ruriko went to the clinic with Akira accompanying her on a day off. There, Ruriko felt something for the first time as another man touched her body. Noticing Ruriko's change, the chiropractor Ooki manipulated her throbbing private part during their second session. "I should stop seeing him," Ruriko thought, but she found herself getting lost in Ooki's cock. Meanwhile, Akira began to sense something amiss between them...
