Chapter 503: Just a Bad Dream

Huff… huff… huff...

After running for some time in this mystical, ominous and horrifying atmosphere, Grimm stopped in front of a port located at the back of the mountain of Black Isotta Sorcerer Academy as he breathed heavily.

"That bastard, how dare he! Wanting to use me as a vessel to gain his so-called rebirth!"

Grimm angrily muttered under his breath.

The Nightmare World was just an illusory world, it was not an existing world composed of actual matters.

However, in this illusory world, a group of horrifying nightmare creatures came to be. These creatures used nightmares to parasitize, influence or even control countless creatures in the real world, forming a symbiotic relationship between them, in turn affecting reality through illusions.

They were unable to be killed, unless someone was able to destroy the entire Nightmare World!

These horrifying creatures of the Nightmare World possessed an even longer history compared to the sorcerers.