Wormhole

Still, Hui planned to secretly stockpile some more protons in his space. To keep his bastard father from finding out, he had deliberately moved the entrance to Thunder Star.

Based on his guess about the fourth stage of Four-Dimensional Perception, there was no way Chuanhe should have been able to see that far.

Yet now, he heard something that made his heart sink.

"You said before that you, Nagato, and Madara once modified a planet called Thunder Star, right? Hahaha, what a casual name. How about we go take a look at what it's like over there now? Back when I was on Shinobi Star, I never noticed there was water over there."

Chuanhe was sensing...