Cain sighed.
He dropped the papers and opened the journal within it were more complex calculations and theories. Quickly skimming through them, he decided he would go over them later,
"You've really thought this through, huh..." He said after a moment of silence.
Steve chuckled smugly,
"Of course I have. I would have no room to call myself a great sage and mage is I didn't, after all."
'System...'
{Replying to Host: It is indeed as the human says. While general mutations might be caused by forms of energy; Devil Essence, Aether, mana, and even Ki, ultimately, a creature evolves by means of leveling up}.
Cain paused for a moment then asked another question,
'What exactly is Leveling up?'
Asking such a question now seemed a bit unintelligent. After all, it would have been more reasonable for him to know something that seems to basic.
However, he didn't.
