The dream was abnormal.
It was a surreal mix created by how close the experience was to him. Like he went through every single action implied in this 'dream'.
Just not in the same lifetime he was currently in.
The premise was that he got reincarnated.
The Fae King Heine was the reincarnation of a person called Astarte.
In the dream world, there existed a monument called the Tree of Origin, Yggdrasil.
It was the source of all life. 'Astarte' was born from this tree.
He also had an elder sister born from the same tree.
His sister was a carefree person. Maybe even more than Minerva. She liked the color white the most, and would usually wear white oversized robes because it was 'comfortable'.
She was the most powerful person he knew, aside from the Creator. She would sometimes go down to the lower realms and interfere with things she didn't like, which wasn't supposed to happen.