Feelings of doubt about Myles betraying him of course exist, even before he made a pact with Myles, Satan already knew better that his nephew could not be relied on, and that was no less important was Myles.
And for that reason, he got a punishment and was exiled to earth, which unfortunately is currently a lot of his people who actually live on earth, that's what makes Myles seem to rule the earth.
"What do you want?" asked Damian who sounded very annoyed at Myles with a red flash in his hand as if he was holding back trying to control his strength.
Myles looked closely at Damian and teased him.
"Ugh, I didn't know you would be that angry, do you regret killing her? Aren't you here to kill a lot?" Myles whispered, who was still harassing Damian who was still trying to control himself.
It felt like Shen wanted to stop Myles's bragging which at any time if Damian lost control, it was possible that he and Myles would be destroyed.