Chika Homura starts high school with one objective in mind: to establish a "cute girl" character. Chika, despite her all-star position on the volleyball team, decides to join her school's underappreciated Wind Instrument Club and play the flute, thinking it to be the most delicate and feminine instrument. Chika reunites with her childhood friend and polar opposite, Haruta Kamijou, for the first time in nine years. Unfortunately for Chika, Haruta is not taken in by her attempts to appear more lovable. But this doesn't stop Chika from developing feelings for the band instructor, Shinjirou Kusakabe—but so does Haruta! Chika's high school life, on the other hand, isn't going as planned, as secrets begin to emerge around her and her pals.