Future Japan, reduced to corrupted towns and ruins left behind by overused technology. The collapse of national and religious structures has produced a world where the old certainties do not apply. An ex-mercenary who goes by Bloody Baldy makes his living as an armament banker — brokering, financing, and managing the acquisition of weapons in a world where such services are always in demand. The work keeps him alive. Whether it keeps anything else intact is a separate question.