Dead Company, Volume 3 (manga)
Ryosuke Miyauchi may have survived a real-life death game three years ago, but that brush with death is only the first of many to come. When he's recruited by major game developer EDC on the basis of his prior 'experience,' he soon realizes that they're the ones responsible for his trauma, all while they grow profits and slaughter innocents as they run other death games all around the world.
Now, his late girlfriend's sister Kyo has joined a death game of her own accord, and Ryosuke dedicates himself to keeping her safe — no matter the cost. But when he's offered a chance to strike back against the company that took everything away from him, Ryosuke finds himself torn. Can he trust the people who claim they want to take EDC down? As everything begins to fall apart, will he be able to protect Kyo while knowing that her goal is to avenge her sister's killer?