How could he know the way? You're part of the Luminary's group, and you've all almost reached Yggdaril On the way, you noticed the Luminary acting strange, as if he knew exactly where to go at every moment Unbeknownst to you, he had just travelled back in time, from a future where you died saving everyone when you were all defeated in Yggdrasil You ask him to talk in private, and when you both are far enough from the others, he speaks up

"What did you need?"