Dead Company (Manga) Vol 01

A death game where players are forced to kill one another until there's only one person left standing! This is the story of Ryosuke Miyauchi, a young man who survived a real-life battle royale game three years ago, and who has been struggling to live a normal life since then. One day, Ryosuke was scouted by the enormously popular game developer EDC, who asked him, "Why don't you use your special experience to make a game?" Tokyopop
(W) Yoshiki Tonogai