Reroll ∞ Death Gamer: The Death Game Before My Reincarnation in Another World Was a God-Tier Game to MeNewリセマラ∞デスゲーマー～異世界転生前に行われたデスゲームは、俺にとって神ゲーでした～

The genius gamer Kyotaro Shiraha was murdered by the owner of an underground casino after securing a crushing victory… Or so he thought. When he awakens, he finds himself in a mysterious space where people prepare to be reincarnated into another world! There, an angel named Karion informs him that he is dead and that he can now be reincarnated into another world. But there’s a catch… Only the winners of the games will be granted reincarnation with cheat skills! A deadly game of extraordinary battles, where lives are on the line, is about to begin in the realm between death and reincarnation――!!