Returning home to celebrate her wedding, An reunites with Mei, her former girlfriend and junior from her school days, with whom she had a lesbian relationship. Although Mei, her junior, is already married, An 's Kokoro flutters and Kokoro is stirred when she meets her again after a long time. Moreover, whether An knows or not, Mei seduces An. "It's been a long time since I had sex with a woman?" Tired of the obligatory sex with her husband while trying to get pregnant, An gives herself over to the pleasure that she cannot experience with a man. Despite feeling guilty, An hopes to meet her again. They kiss and kiss, drooling saliva as they devour each other's lips, and An climaxes over and over again with the exquisite use of her tongue and the play with toys. "If you get pregnant, let's raise you together with our breast milk?" In the name of a lesson in trying to get pregnant, she is made to wear a paper diaper and treated like a baby, and she is immersed in the abnormal play.