Nanling High School Wind Ensemble. Since joining the club, Katagiri Chihaya has consistently secured the 1st position on trumpet, but then a transfer student, Aikawa Hibiki, who also played 1st trumpet at a prestigious wind ensemble school, appears before her. Eventually, the two become irreplaceable to each other through music――. With the prefectural competition approaching, the club members unite their feelings once again. Not only Aikawa and Katagiri, but also Gui and Inukai, each troubled by their futures, begin to move forward with new resolve, trusting in one another. As they are tossed between conflict and hope, they rely on the firmly held hands, and the curtain finally rises on the prefectural competition――! Winner of the "Next Manga Award 2023" in the web manga category! A hugely popular youth ensemble drama from LINE Manga, deepening emotions in Volume 4!