It tells the love story between the heroine Takahashi Nanami and Shinohara Haru on campus. Takahashi Nanami is a freshman in high school. With the mentality of a 15-year-old girl, she recklessly breaks into the new semester's friendship, and wants to insert everyone's topic. But unable to understand the events in the population. Among the conversations of many girls, it was also discovered that the focus of attention was Yano Motoharu. Takahashi Nanami was selected by the class committee, and Yano Motoharu unintentionally tricked her . Yano Motoharu's hidden troubles were quickly noticed by Takahashi Nanami, and she also ushered in the biggest miscalculation in her life, and the same was true for her love. Takahashi Nanami also didn't realize that she fell in love with Yano Motoharu. One day, she touched Yano Motoharu's past and learned that a girl named Nana was Yano Motoharu's girlfriend. Nana is also her classmate, who died in a car accident while driving with her friends the previous summer. After learning about Yano Motoharu's past, Takahashi Nanami still wants to express her heart and pursue Yano Motoharu.