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Kaori and Nanako, who went on to the same university after graduating from high school, have been in a physical relationship for several years. They joined a club together and made a fairy tale as a proof of their eternal love, and made a firm promise to each other. After graduating, they both started working at the same company, sitting next to each other and nurturing their love without being disturbed by anyone, but that promise was broken when Kaori got married, arranged by her parents. Though they work in the same workplace, they no longer exchange words, and Kaori learns of Nanako's suffering through gossip among her colleagues...