Ishikawa Mio stars in a classic cheating fantasy. At a reunion with old friends, the ex-boyfriend who first taught her how to climax comes on stronger than expected. His touch and kisses awaken memories of her unforgettable first time, and her resistance soon collapses. She hides from everyone to have sex with him, telling herself it is only a kiss because she drank too much, only a trip to the hotel to lie down, and only one last encounter to get her pushy ex off her back. She knows they are excuses, but insists she had no choice as she gives in to the illicit pleasure.