Mortis didn't react to Gravis' comment as he teleported away.
He wanted to think on his own for a while.
Mortis was incredibly powerful, and his affinity for power was insane. When it came to the pursuit of power, Mortis was probably even superior to Gravis.
However, Mortis' personality was too black and white.
In his mind, there were only the neutral ones, the ones that he considered enemies, and the ones he considered friends. There was no nuance to his categorization of other beings.
Because of that, Mortis' mindset could easily be shaken as soon as something appeared that he couldn't put into any of these categories.
Gravis had also thought about Arc's words. After all, such a topic also interested him.
However, Gravis saw no issue.
So what?
If he were in Mortis' shoes, he would simply look at Arc with a more favorable expression, but that was it. There would be no debt or anything.
