I believe this is basically the dark souls story told in its own matter. The flame, hollowing, the curse, and bonfires. The flame is the traveler the hollowing is obviously consistently being able to come back to life. Bonfires ghosts and the tower. The curse having to constantly kill either the darkness or push it back for as long as you can. And like dark souls the solution I believe is to either let the traveler die and the darkness leave if it's an actually entity if I'm correct the darkness goal is to kill the traveler. Like dark souls either become a match for the flame(keep fighting off the traveler) or let the age of darkness take over.(allow the travelers death.) and that's why I believe some guardians have wondered off believing the traveler is the curse. If destiny has any relation to dark souls the cycle is never ending whether whatever choice you choose whether you keep the flame alive or let it die. [spoiler]i know this is kind of messy but I'm seriously to lazy to go back and edit[/spoiler]