If you loved The Flyboys, try Crows Zero II
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theysit in Action / Adventure / Crime territory. If that's the register that drew you to The Flyboys, the second film will land in a comparable space — through a different lens.
What Crows Zero II is
Takashi Miike returns to high-school gang warfare, as one does. Genji's G.P.S. faces a challenge from Hosen Academy, also known as the Army of Killers, reigniting a dormant feud. It's a fairly standard sequel, all told.

