In modern-day Japan, in the heart of the massive metropolis of Tokyo, Aoki Ekei grew up in the fold of the yakuza crime syndicate led by Yoshiro Sagara. The Sagaras, hailing from a long line tracing back to feudal Japan, hold onto their members-some literally owned by the crime family, like Aoki himself-with an iron fist of tradition and fear. To leave the yakuza means meeting a certain and violent death. The obedient dog Hideo "Shinobu"...