Yuuri and Koharu are thought of as happily married couples at work. However, in reality, both were frustrated because of a sexless marriage caused by their husbands' affairs. The two of them, who couldn't confide in anyone about this fact and were suffering, learned one day that they were in the same situation. Our lives shouldn't end like this. For revenge on their husbands, they abandon the mask of virtuous wives and unleash their desires... Drowning in the pleasure they had been craving, drowning in the cuckold wives in the same situation, an intense codependent lesbian sex that cannot be reversed.