Of course, with so little time having passed, these monsters were still in their infancy. But the animals throughout the Floating City had already undergone obvious changes.
"Lord Shunichi, could these be..." Karin stared in disbelief at a rabbit spitting fireballs nearby.
"Yes... monsters. A thousand years ago, monsters ruled this world. Kaguya Ōtsutsuki came here and damaged the energy of the earth veins. That depleted the natural energy in the air, and the monsters gradually disappeared."
Uchiha Shunichi waved a hand, tossing the animals that had begun to transform into the forest beneath the Floating City.
In truth, he did not mind the animals absorbing the natural energy he released. The Kamui Dimension might have seemed like nothing more than a space Uchiha Shunichi had swallowed, but it actually had a complete ecosystem.
In other words, this place also contained energy from earth veins similar to those in the Shinobi World. However, that energy was almost exhausted and could no longer serve its original purpose.
Pouring vast amounts of natural energy into this place would not reactivate the energy of its earth veins. But the natural energy the animals absorbed would not disappear, either.
Just as Kaguya Ōtsutsuki had done a thousand years ago, if those monsters truly grew to a certain level, killing them would make extracting sage power easier.
After all, every living thing in this entire world was being raised by Uchiha Shunichi.
"The natural energy is so concentrated! How did you do this, Lord Shunichi?" Rather than rushing to begin training, Karin curiously questioned Uchiha Shunichi.
"The God Tree inside me can convert chakra back into natural energy. I only discovered that recently. I had far too much chakra from Kaguya Ōtsutsuki anyway, so I simply took some of it out," Uchiha Shunichi said calmly.