Uchiha Huan's One Glance, Ten Thousand Years from the Eye of Time and the Eye of Space had both finished cooling down.
However, ever since he obtained the Eye of Time's One Glance, Ten Thousand Years skill, it had shared a cooldown with the Eye of Space, which was effectively a nerf to the Eye of Space.
He hoped future Spirit Rings could make up for this flaw, or that he could find a way to reduce the cooldown of One Glance, Ten Thousand Years.
Uchiha Huan activated the Eye of Space again and returned to the Naruto World.
The moment he returned to the Naruto World, Uchiha Huan used Reverse Summoning and entered Shikkotsu Forest.
"Lord Huan, it has been a long time."
"It has indeed been a long time, Katsuyu."
The Natural Energy permeating Shikkotsu Forest delighted Uchiha Huan's body and mind.
His body automatically absorbed Natural Energy and converted it into Sage Art Chakra.
He no longer needed to rely on the mucus secreted by Katsuyu to absorb Natural Energy. His body could absorb it on its own.
"Katsuyu, why does the Natural Energy outside feel so different from the Natural Energy here? I can absorb Natural Energy outside too, but I constantly need to remove impurities. The Natural Energy here is so pure."
After using Sage Mode in the Douluo World, Uchiha Huan needed several days to fully recover.
But in Shikkotsu Forest, he only needed half an hour to replenish it completely.
Katsuyu was somewhat surprised that Uchiha Huan would ask this question, but she still replied in her gentle voice.
"Do you know about Dragon Veins?"
Uchiha Huan's eyes immediately lit up. Seeing his expression, Katsuyu continued, "It seems you do. Beneath each of the Three Sacred Lands lies a Dragon Vein. Natural Energy