Cain wiped the sweat off his brows.
In the darkness of the worn hall, a subtle light diffused into the air.
This light came from the giant magic circle engraved into the cold, hard ground with the Devil Blood.
It was ominous, as traces of Devil Essence was ingrained within the blood of the Devils besides abundant mana.
Thos Devil Essence was released into the air when Devil Blood was used to create the magic circle. This made the surrounding darkness seem even more prevalent and evil.
Normally, this level of Devil Essence would be absolutely lethal to a regular human. Although it wouldn't turn them into a Devil Corrupted, it would be for the better if humans didn't even interact with Devil Essence even a bit.
Cain frowned as he stared down,
"It isn't even a tenth of the way complete."
He had been at this for two days straight, but he had come across various issues that halted his progress.