Chikyuugi: Hoshi

Dreaming of better fortunes, Kaen sets sail on a life-threatening voyage. When he lands on the “golden land” of Japan, he becomes what's known as a “corpse”… Forced to hide from authorities and work under the gang boss "Laoban," Kaen becomes involved in all kinds of crimes, from smuggling to murder. The curtain rises on a spectacular story about a man trying to survive in an urban underworld swirling with malice!

(Source: Author's Website, translated)