Sign death and send misfortune.
An ordinary courier is forced to become a living signer for express delivery in the underworld. Each package indicates an impending death.
He traveled through the dangerous places in the dark side of the city, surviving between the omen of death and his own backlash.
As his abilities increase slightly and the truth approaches, he discovers that he is not only a victim, but also a key pawn in an ancient conspiracy.
When the boundaries between yin and yang gradually blur, he must choose: become a puppet of the system, or rewrite the rules and become the last gatekeeper to protect the dark side of the world.