Isekai'd YAKUZA

The Yakuza Transferred to Another World Commits Villainous Deeds with Swords and Magic! Capturing female demon-kind and selling them to slave traders. Threatening adventurers who invade others' homes and extorting money. The Yakuza's way to survive in this otherworld was through their Yakuza business. Accumulating wealth, they buy and gather slaves to form a team and venture into the last dungeon. The Demon King proposes, 'I'll give you half the world, in return, become my underling.' What will the Yakuza choose!? An ethically indifferent Yakuza success story in a different world!