From Seven Seas:
Dai lived a normal high school life in Sendai: a city of hot summer days and rainy nights. Between basketball, part-time jobs, and an uncertain future, something was missing.
And that thing was music. With his days in senior year running out, Dai swears a heartfelt vow: “I’m gonna be the best jazz player in the world.” But what do you need to be the best? Talent? Effort? A lucky break? Or maybe just a deep, pure love for music, and too much stubbornness to know when to quit.

A special prequel chapter (Blue Giant Tokubetsu-hen) was published in the 2nd issue of CoroCoro Aniki on March 14th, 2015. It was not collected in the main volumes.

Note: Was nominated for the 8th and 9th Manga Taisho Award in 2015 and 2016, the 22nd Tezuka Osamu Cultural Prize in 2018, the 22nd Tezuka Osamu Cultural Prize in 2018, the "Best Comic" at the 46th Angoulême International Comics Festival in 2019 and the French 14th ACBD's Prix Asie de la Critique in 2020.
Won the 62nd Shogakukan Manga Award for general manga in 2017, the 20th Japan Media Arts Festival's Grand Prize for Manga in 2017 and the Mandō Kobayashi Manga Grand Prix in 2018.