The world has suddenly transformed into a dungeon-filled landscape. Ninomiya Tsukasa, a young man aspiring to become a Hunter, awakens to an S-Rank job called “Trap Master”—a power that allows him to dominate and control all traps within dungeons. Those who master traps are truly invincible inside dungeons. With his unique skill, Ninomiya can grasp complete control over the terrain itself, laying waste to monsters through devastating trap combinations including flames, massive boulders, chainsaws, and countless other deadly mechanisms that chain together for maximum destruction. “I’ll set it up—the death trap to hell!”