Summary: Yama is a young executive who works under the chairman of the Serizawa Group, a yakuza organization. He is also a martial fanatic who gets becomes aroused when he sees violence. "When I see blood I feel excited and want to embrace a woman." Taken in as a child, Toshiyuki grew up with Yama like a brother and ended up becoming Yama's caretaker. Lacking satisfaction and stimulation one day, Yama ordered Toshiyuki to take care of his dick...