On the last Valentine’s Day before her high‑school entrance exams, Nana Suzuki gathers her courage to confess to her longtime crush. When her chocolates are accidentally ruined, she rushes home to remake them, unaware that her grandfather has turned the microwave into a strange invention. Suddenly, six additional copies of Nana appear, each with an extreme personality and a crystal that grants them magical powers. With her plans thwarted, Nana resolves to confess to her crush during her first year of high school. The only obstacle is that her crush is the top student Yuuichi Kamichika, and following him to his elite school means she must hit the books. Armed with six new allies, Nana prepares for whatever the exam season might throw at her.