Nanling High School Wind Ensemble. Since joining the club, Katagiri Chihaya has consistently secured the 1st position for trumpet. However, a transfer student, Aikawa Hibiki, who also played 1st trumpet at a prestigious wind ensemble school, appears before her. Gradually, the two become irreplaceable to each other through music――. The wind ensemble successfully qualifies for the prefectural competition, but distrust towards the often-absent Aikawa grows, leading to the percussionist, Inui, secretly starting a petition, which shakes the unity of the members during this crucial time. In response, Katagiri devises a certain strategy…? Nominated for the "Next Manga Award 2023" in the web manga category! A hugely popular youth ensemble drama from LINE Manga, taking a new step forward in its third volume!