Nana, an English teacher at a certain school, has a secret that she cannot tell her students... the existence of her husband, Shota, who is 12 years younger than her. The two originally knew each other because their parents were friends. Two years ago, Shota moved to the United States and was separated from Nana, but he became a successful businessman. After returning to Japan, Shota married Nana and transferred to the school where Nana works, but... Shota is having trouble fitting in at a Japanese school. Nana is unsure of how to distance herself from Shota...