The setup of Blue Giant is familiar anime territory: a young boy from a small town moves to Tokyo to pursue his dream. This boy, Dai, is a saxophone obsessive. He practices all day under a bridge, honking and warbling until he wears out his reed. Naturally, Dai wants to be the greatest jazz musician in the world.
For all his audacious ambition, Blue Giant is largely restrained. The movie focuses on the trio that forms the band — and even shifts its attention away from Dai at around the halfway mark. There’s also Sawabe, a savvy and smug pianist who knows how the club performance circuit operates. And then there’s Dai’s roommate, Tamada, a high school friend who improbably becomes the band’s rhythm section after trying the drums just…