Gatekeeper

A person who helps others pass through from life into death. They have a gentle soul and are special people. Usually they are unknowingly brought into a persons life before they are going to die to help the person's soul transfer from the living into death and the afterlife, whatever that may entail.

Person A: The reason you keep having people around you die is because you are The Gatekeeper, here to ease their soul during death for their transition into the afterlife to be easier.

Gatekeeper: Really? I guess someone has to be the Gatekeeper...