A hundred years after they arrived in the highest world, Mortis vanished from Joyce's perception.
Mortis needed to distract himself and get away from this fucked up situation.
Where did he go?
Mortis went to a Law Comprehension Area for the Law of Blaze.
Where was the Law Comprehension Area, and how did Mortis gain access to it?
Gravis' first paycheck.
A century after Gravis started working in The Heaven Company, he got his first paycheck. He was called into The Heaven Company to get it.
He greeted the receptionist, and the receptionist told him where he had to go.
Gravis teleported to an office where an Ancestral God stayed to hand out paychecks.
Gravis handed over his white emblem, and the Ancestral God looked at it.
"Black Sentry, huh? Never seen you here before," he said casually. "You're new, right?"
Gravis nodded with a smile. "Yep. This is my first paycheck."