One must not forget that Simon was a Demi-God in his past life, and one of the abilities of a Demi-God was the ability to manipulate space.
This ability was crude and basic, but a Demi-God could manipulate space with their powers to a certain extent.
Due to how many battles and the talents he had in his first life, he knew quite a lot about space.
He understood space.
Unlike how a demon his age would be 'blind' and oblivious on how to control space and understand it, Simon had no need to go through all of that.
This was the main reason why he was able to get extremely close to the silver crack with ease despite it distorting the space between them.
In his Chaos Flame Space, he could do things that he could not do in the real world.
He only needed the understanding and creativity to do them.
"This is the last element. Now I just need to compress my chaos flame."
Simon mumbled softly as he looked at what looked like a glass shard in his hand.
