Making Trouble

"So, if we go far enough, we'll eventually encounter this Forbidden Radiation Sea, right?" Ace asked for confirmation. 

'Strange, why he didn't know about this? Could it be he never go in that place to search for ascension?' Pen thought with uncertainty and felt even more bitter when he thought about how he had been madly searching for a way to ascend, yet this man didn't even need to. 

Hiding his bitterness, he nodded, "Yes. No one can miss it if they want to go forward." 

'Could it be the empire is really on the other side of this forbidden radiation sea? Although others might not be able to travel through it, it is completely different for me.' Ace's eyes shimmered as he had already decided where to go with his main body if he didn't find any clues about the empire in five years. 

"What about the sky? Have you ever tried to go into the sea of stars?" Ace curiously asked.