A secret that Nana, who is an English teacher at a certain school, cannot tell her students... That is the existence of her husband, Shota, who is 12 years younger. The two were originally acquainted with each other through their parents. Two years ago... Shota went to the United States and was separated from Nana, but he succeeded as an entrepreneur. After returning to Japan, Shota marries Nana and enrolls in the school where Nana works. However, Shota cannot get used to Japanese school. Nana doesn't know how to keep her distance from Shota...