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Tsukinoe runs a coffee shop with her fiancé and lives a peaceful life, but when she is invited to a class reunion, she meets her ex-boyfriend, who has been training her as a master and sex slave since back then. She thought she had no relationship with him since she has a husband now, but her body remembers that sensation. Even though her classmate is right next to her, she is suddenly retrained in deep throating! She is made to understand her position in the hotel by lying that it is an after-party, and is slapped and spanked in hard sex! She is mercilessly creampied, as if spat out! The memories of being a human toilet are completely revived. She can't have lukewarm sex anymore. She is no longer a wife or a woman, she is a bitch.