Five years ago, spiritual energy revived, and the demon ruins overlapped with the earth. Monsters sneak into the city, disguise themselves as humans, and hunt in the dark.
He was admitted to the Demon Suppression Bureau and became a low-level patrol inspector. His superpower [Blood of Ruins] has awakened - every time he kills a monster, his blood will absorb the monster energy, condense it into skill runes in his body, and use it permanently for his own use.
He thought it was just a golden finger that became stronger, until one day, when the system read the monster's memory, he saw a familiar figure——
My father, who has been missing for ten years, wears the armor of the monster camp.
