Old boy.

Goto marches forward relentlessly to discover the identity of his tormentor, the man who had Goto locked up in a private prison for ten long years without ever telling him why. But his nemesis wants Goto to find him, and meet they do, where Goto's enemy reveals his identity and gives Goto clues that suggest this decade-long ordeal stems from a long-forgotten schoolyard grudge. But there's more to this cruel game, and Goto's friends may end up in the morgue if he doesn't agree to continue the game - in sudden death!