Gachiakuta | Synopsis The city, where the civilized class live, and the slum, where the descendants of criminals "tribe folk" gather, are the two sides of society separated by high walls, and below—the Abyss—a dumpsite for trash and where criminals are exiled, is feared even by the people of the slum. Orphaned boy Rudo lives in the slum with his foster parent Regto earning a living by carrying out criminal activities in the town. Rudo shortly faces a tragedy that made him vow with fury to take vengeance against all of society who treated him wrong.