Junpei Takeda is summoned to another world alongside his childhood friend Noriko Tatsumiya and the bully who's tormented him for years, Kido Shouta, only to find out his stats are worse than an average farmer's while the others get hero-tier power. Betrayed by the one person he trusted and left to die inside a labyrinth with a survival rate under one percent, Junpei claws his way out and sets his sights on revenge. The light novel leans into psychological trauma and survival horror rather than a typical power-fantasy isekai arc.