Omniverse

The flight continued in the Vast Expanse, a space filled with nothingness for dozens of years. The Vast Expanse was truly nothing. No color, light, essence, gravity or life. There weren't even aberrant creatures, weird spatial phenomena, or space itself. As Yan Zaizen traveled, there was no resistance at all.

The feeling was so hard to describe that it was nearly impossible. After all, nothingness truly was unfathomably challenging to wrap one's head around.

During their travels, Yan Zaizen had conversed with Ezekiel on many occasions, learning about the Vast Expanse and its creation. Supposedly, the Vast Expanse has another name. This name was impossible to verbalize correctly by human tongue, but the closest pronunciation would be Non.