After the Nuclear Explosion, I Became a Death Courier

Nuclear explosion apocalypse, demons are rampant. I am a corpse collector, specializing in "dirty" work. They call me "Mie", the Class A executor of Death Express. The reward is an inner elixir, a relic, or... A life. I took a private job to deal with a "traitor" from the Demon Hunt Bureau. The mission went smoothly, the head was decapitated in three seconds, and no blood was splashed on the windbreaker. Until the Blood Pact crawled out of that corpse, until the Demon Hunt Bureau's gun was pressed against my forehead, until the purple-eyed boy I rescued crushed the demon's head with his bare hands and whispered to me: "Nirvana... I finally found you..." Only then did I know—— Every body I handle is a mystery. The knife in my hand has been hungry for a hundred years. And my blood is the medicine that all the monsters in the apocalypse want most.   "The goods need to be clean and the people need to disappear." "Cooperate or die." "My sword is called Nirvana."