Akutoku no Rakuen

Lured by the promise of an "easy job," Tadashi arrives in a tropical Asian paradise. He had naïve fantasies of "chilling with bikini-clad beauties in a blue ocean paradise!" But his employer turns out to be an "anonymous, mobile criminal group." His passport is stolen, he's forced to commit fraud, and if he tries to escape, he's killed. It's a hellish place, the complete opposite of paradise, where violence and death run rampant. This violent crime suspense depicts the hell on earth that Japanese people must not turn a blind eye to!

(Source: Kodansha, translated)