Kim Jun-Woo, the world's first SSS-ranked genius hunter.
He possesses incredible abilities, but his terrible personality leads to reputation issues.
Amidst trouble, he is attacked and killed by an unknown group.
And when he opens his eyes, he has returned to the past 10 years ago.
Although he tries to become a hunter again and elevate his rank, his skills are all sealed by the hindrance of his past life.
To have that released, he needs to become the "Dungeon Cleaner," notorious for being extremely demanding in the industry?!
But this cleaner is different!
Not just monsters—troublesome hunters, superiors only taking positions after being hired for family reasons, and even those who will be his colleagues.
He is creating a mess to clean up everything.
The old hunters, stronger than the current ones, and his insane cleanup begins!
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