At first glance, Dai Miyamoto is an average high school student—except for his relentlessly optimistic mindset and determination to do his best no matter the challenge. He approaches every obstacle with the belief that success may always be within reach. Introduced to jazz by a friend, Dai is instantly captivated by its intensity. Though few around him understand the depth of his newfound passion, he pours his heart into practicing the saxophone every day. As the people around him begin to support his dream, Dai dedicates himself to mastering jazz with one singular goal in mind—to become the greatest jazz player in the world.