Four misfits. One murder.

And the monster who haunts them from the shadows.

In a world with plague outbursts, demons that terrorize the world, four misfits were forced to hunt the monsters for survival.

Their world shattered when they found out their dearest was murdered—the one who bound them together. Now the demon lord taunts them with letters of knowledge at every turn. 

Desperate to seek vengeance and end the demon, they embark on a journey that none have dared to take and none have succeeded. 

Will they emerge victorious, or will they fall into the abyss of their worst fears, at the mercy of their greatest enemy?