Reincarnated as a Calamity-Bringing Abomination, I Turned Myself In to the Nation

Eerie dungeons descend at random. Humanity cannot destroy the ghosts and monsters, and can only use human lives to fill the gaps and rules to seal them away. When Restricted Zone S-009 went berserk, the whole world waited for the southwestern defenses of Great Xia to fall. But the moment that indescribable, terrifying shadow was spat out of the restricted zone, everything took a sudden turn! Faced with thousands of cannons trained on him, the S-rank monster capable of destroying a city didn't go on a killing spree. Instead, it took human form and politely knocked on the gates of the defensive line: "Don't shoot! I'm on your side! I want to take the civil service exam! I want a permanent government job!" Su Bai was reincarnated as the strongest eerie entity, [Nest of Containment]. Not only is he immune to physical attacks, he can also devour, package up, and carry away every eerie dungeon! Every eerie entity he contains gives him its abilities. [Devour the Red-Clothed Ghost]: Gain armor penetration and a terrifying shriek! [Imprison the Mirror Ghost]: Gain the ability to fold space, then help the nation build an absolutely secure base in another dimension! [Subdue the Undying Corpse King]: Gain infinite regeneration and serve on the front lines as the ultimate tank! While other countries were still using human lives to explore restricted zones, Great Xia was saying: "Su Bai, that S-rank sea monster dungeon is about to erupt!" Su Bai: "Wait there. I'll go eat it. I'm a little short on seafood-flavored rules." "Su Bai, the Eagle Empire has redirected the disaster toward us!" Su Bai: "Great! My prison could use a few free laborers!" While the whole world still trembled under the shadow of the eerie, Su Bai had already helped Great Xia turn restricted zones into backyard gardens and put vicious ghosts to work on infrastructure projects. Other countries broke down: "Are you crazy? You call those things eerie? They're clearly humanoid nuclear weapons!"