The Void Step was a strange technique Nefion had taught Arthur a long time ago. It allowed the user to step foot inside the Dream Realm, which was a mysterious place Arthur had little information about.
Now, the Void Step took the user to an even more mysterious part of the Dream Realm, and Nefion always told Arthur he should not use that technique at night-time, as it was when strange creatures could attack him.
If Arthur could, then surely he would avoid doing such a thing, but it was not the time to think about it! Seth was getting weaker and weaker, unable to win against that rank 2 mage.
Seth losing there meant all the effort he put to win the battle would be useless, and everyone would die.
"Even if I don't kill him, hurting him will be enough! A clean hit is all I need!" Arthur thought.
Arthur activated the Void Step, and everything around him turned darker, as if a veil was covering his vision. Then, he dashed toward the rank 2 mage, stopping right behind him in the air!