Blue Giant Omnibus manga volume 1 collects volumes 1-2 and features story and art by Shinichi Ishizuka.

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.