Hakkai - Legends of Demons

Hakkai is set five years after the sky tore open and power stopped belonging to kings — now it can wake up in anybody. Jax Bugsye and his brothers Remy and Vex fight their way into an underground arena tournament called the Black Book War, chasing prize money that is the last wall between corporate crews and Deuce Row, the street that raised them. Jax is drawn against Renzai Akoro, the greatest weapon alive, and loses in front of a crowd that laughed before the fight even started — but something in him shows through, and the wrong people are watching. Above the cage, the most trusted man in the world reveals he owns the killing pit and has been testing every fighter in it for a war nobody is ready for. A street-level action series about three brothers, a missing fourth, and a tournament that was never really a tournament.