Reincarnated as an Energy with a System

Thunder raged outside the tower, but a similar thunder raged inside Ning as well when he heard what the system had said.

"What do you mean I can afford to take some time. And what was that about time being relative?" Ning asked as hope brewed inside him that he thought would only bring his disappointment if he said it out loud.

Ning didn't understand why mass affected time. He didn't need to. All he needed to know was that he had time and could go back to see his loved ones without having to wait very long.

"You should have let me know about this earlier, soothe my inner turmoils," Ning said, but the system didn't respond.

Ning didn't care if it did. He just thought about how long he had before he could reach back.

'At 5 times the slowness, if I wanted to reach Kumia within 1000 years, I have 5000 years. That's… pretty long, even for me,' Ning thought. He was getting more and more hopeful that he would actually make it back in time. 

At least, back before they all either died or the worse scenario, lived long enough to stop caring about him. He had never wanted to go back to a Kumia where Ely, Anya, and the rest didn't care about him.

"10,000 years," he said to himself. "I have 10,000 years to return back to Kumia. That should be about 2000 years for them, which I hope they can wait for."

The system chimed in right as Ning finished speaking. Ning frowned once again. "What is the flaw?" he asked.