The world has suddenly transformed into a dungeon.

Tsukasa Ninomiya, a young man striving to become a Hunter, has awakened to an S-Rank Job: Trap Master—a class that governs every trap within the dungeon.

Inside these walls, the one who controls the traps is truly invincible.

Using his skills, Ninomiya seizes total control of the terrain, obliterating monsters with lethal chains of traps, from roaring flames and massive boulders to whirring chainsaws.

“I’ll set them up… the Death Traps that’ll send you straight to Hell!”

The curtain rises on an unconventional, exhilarating, and unstoppable battle action saga as he climbs his way to becoming the strongest in the world!