Zunou to Inou ni Kinniku de Shouri Suru Death Game: Zunousen ni Maiorita Saikyou no Baka

A man awakens chained to a wall by a poisoned collar, trapped in a Death Game orchestrated by a demon. The game requires participants to use their supernatural abilities and tactics to kill others in order to fulfill their desires. However, Gou Kabashima, an idiot with immense strength, removes his collar, breaks through a locked iron door, and enters the game, leading to its complete collapse. The story follows this unexpected turn, marking the start of a powerful and unpredictable Death Game.