Suguru Geto and Satoru Gojo were high school sweethearts back then. A few years have passed since they lost contact with each other. Gojo eventually adopted a boy named Megumi Fushiguro, while Geto adopted two girls, Mimiko and Nanako Hasaba, who became his beloved daughters. Both of them are now fathers and are happy with their lives, but deep down, they still secretly yearn for each other.

However, when Geto found out that Satoru was getting married soon, he was heartbroken. Ever since then, he hadn't been acting like himself. His daughters noticed that something was wrong, especially because their papa had been crying whenever he thought they weren't looking.

Megumi and Geto's daughters know each other since they're classmates. One day, Megumi suggested that they invite Uncle Geto to his dad's wedding. But Mimiko and Nanako immediately disagreed. There was no way they were going to let their papa attend the wedding of the man he'd been secretly crying over.