Secret

Envy, lust, sloth, wrath, gluttony, pride, greed. A group of sinners who bear the guilt of the seven deadly sins has been gathered in an old courthouse to face judgement. To leave this place alive, they must offer up a sacrifice - one of their number. As the trial begins, who will the gavel fall on first? 

(Source: Yen Press)

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?" 

(Source: TOKYOPOP)