Midori Saezima, a first-year high school student, stumbled upon a tall and handsome classmate taking care of a stray kitten on a rainy spring day. Even though she didn't know his name, she fell for him instantly. Unfortunately, she fell ill and returned to school three days after summer vacation, only to find out that she had been unknowingly nominated for student council. Despite numerous embarrassing moments, Midori and Akira Sudo, the mysterious boy she had a crush on, were both elected to the council. As the first council of the newly established high school, they would create new traditions and a touching romance.