In the dark alley of Port Wilder, the assassin Karen Morpheus obtained the coordinates of the "Eye of Return to Ruins" from the cult deacon - that is the crack connecting the two worlds. Once opened, the abyss monsters will devour the world.
The blood moon will come in six days, which is when the seal is at its weakest.
Karen thought this was just an ordinary mission, but found that he had been trapped in a larger conspiracy: the death of his father, the use of the guild, the "Shadow Body" blood flowing in his body, and even the cursed dagger that could swallow the darkness - everything pointed to the same truth.
He must cooperate with the enemy who killed his father and prevent the abyss from opening while being hunted by many parties.
But what he didn't know was that the "blade that carries sin and light" in the prophecy was not going to cut off the chains of the abyss——
But himself.
Concept: This is a dark fantasy novel with an assassin as the protagonist, which combines Cthulhu horror, urban adventure and revenge narrative