Monster Eater

Ruud, who is an adventurer in the remote city of Barona, has no fighting ability and is hated by his fellow adventurers, calling him a "miasma scavenger.". He spends his days exploring the miasma labyrinth using his only skill, "state anomaly nullification," but one day he hears that a new labyrinth has been discovered. An adventurer calls out to Ruud, who is about to head towards her.