Ryosuke Miyauchi may have survived a real-life death game three years ago, but the lingering trauma and guilt from having his girlfriend's blood on his hands has left him an empty man with an empty life. When he's recruited by major game developer EDC on the basis of his prior 'experience,' he soon realizes that his first-hand brush with murder is exactly why they offered him the job. Now he's left with no choice but to take part in running death games similar to the one that cost him everything. But what will he do when he finds out that Kyo, his late girlfriend's younger sister, is one of the players in this dangerous game? Knowing that his hands are already stained with innocent blood, Ryosuke makes his decision to risk it all...!