Husband, I'm sorry... A busty new wife who just got her driver's license secretly had an affair with her instructor, who also had a huge penis, and fell into depravity. (FNS-131)

Rin, a newlywed wife starting driving lessons, meets a male instructor younger than her husband. Attracted by his gentle, considerate, and reliable nature, Rin finds her heart pounding uncontrollably when they're alone in the car during lessons. One day, in an empty training room, she confesses her feelings and crosses that line. Seemingly reckless, Rin, and the day after that, in the cramped driving school car, opens her vulva, welcoming the instructor's enormous penis despite being a married woman.