Based on a popular manga series, the story follows Haruna Nagashima (played by Ito Ono), who spent her middle school years focused entirely on softball. Now in high school, Haruna decides it’s time to find a boyfriend. However, she’s out of touch with current trends and has no idea how to catch a boy’s interest. By chance, she meets You Komiyama (portrayed by Junpei Mizobata), a well-liked senior. Haruna asks You to help her learn how to appeal to boys. He agrees to assist her, but with one condition: she must not fall in love with him.