Tasogarechou Prisoners

Five years after Japan ends capital punishment, the worst offenders are no longer executed but shipped to Twilight Town, a sealed-off prison city outside the reach of any law. Inside, condemned prisoners are simply left to tear each other apart, with no atrocity off limits. Yuma Sentou insists he is innocent, but his death sentence lands him in that pit regardless, and staying alive long enough to expose the truth becomes his only goal.