The protagonist, Misaki Nakamichi, is a high school teacher who loves her handsome husband, Yusei, who works as an interior designer. However, she is troubled by the fact that she has never had sex with Yusei. One day, she finds out that Yusei is actually dating a man. And the man she has an affair with is Shuhei, Misaki's former student... A human love story that describes a twisted triangle relationship!