Astral Plane
Lith and Emilia discussed a few things for a while and during this time, Lith realized that his ascension took a long time.
It had been around a day and a half since he started his breakthrough and there were also a lot of anomalies that occurred. Lith was surprised knowing all of these things and he assumed that they occurred due to him entering that strange gray world.
As for what Lith knew about this world, it was nothing. He had read many books and been on many forums but there was not a single mention of this world. Lith decided to ask about it to Emilia but she also shook her head and said that she didn't know.