With long black hair and a sinister aura, high school girl Kuronuma Shoko (voiced by Noto Mamiko) is called "Sadako". With the help of the cheerful boy Fuhaya Shota (voiced by Namikawa Daisuke), she not only made two good friends Yano Ayane (voiced by Sawashiro Miyuki) and Yoshida Chizuru (voiced by Sanping Yufuko), but also began to integrate into the class with her kind and gentle nature. In the first season, she had begun to realize that she liked Fuhaya, but she was shy and timid by nature and dared not confess to Fuhaya. The story of the second season begins with an unsent Valentine's Day gift. Can Shoko and Fuhaya, who are welcoming the new semester, face their feelings bravely? When they entered the second grade, they also welcomed a new classmate, Kento Miura. Shoko, Fuhaya, Ayane, Chizuru and Tatsuya, the pure love story of campus written by them, continues in the second season... This animation is adapted from the manga of the same name by Shiina Haruho. The original work is currently being serialized in the Bessatsu Margaret, and is a super popular work for girls with total sales of over 10 million copies.