The Last Postman

In this city, every dead letter hides a conspiracy. The post office is a suppressor. Everyone has super powers, but they can only walk one way in life. I am the last postman, but I can draw abilities from anyone. Memory tampering, time and space cycle, disappearance of existence, misalignment of cause and effect... All weirdness has logical flaws. I search for truth in the knocks on the door and plunder the power in the deliveries. When all the postmen disappear, I will face the curse of the whole world alone.