"Is that all?"
Shinji murmured softly in the lab.
This was one of the drawbacks of his Senjutsu—or rather, a flaw inherent to Senjutsu: the amount of Natural Energy in any given area was limited.
In lower-level fights, shinobi who had mastered Senjutsu were limited only by how quickly they could absorb Natural Energy. They didn't need to worry about whether the surrounding environment contained enough.
But once they reached a certain level of strength, the amount of Natural Energy in the environment became a crucial factor affecting the upper limit of a Senjutsu user's power.
In the original timeline, during Naruto and Sasuke's final battle at the Valley of the End, Naruto had briefly drained all the Natural Energy in the surrounding area.
In other words,
in battles between opponents approaching the level of a "Six Paths level" combatant, it was already possible for the Natural Energy in the environment to be briefly exhausted. If the fight reached an even higher level, the lack of Natural Energy would inevitably become an even more significant problem!
Putting those thoughts aside, Shinji focused entirely on taming the vast amount of Natural Energy he had absorbed into his body.
Thanks to his earlier attempts, he had become quite adept at taming Natural Energy. And compared to the terrifying amount of Chakra he possessed at "Six Paths level," the Natural Energy he had just absorbed made up a very small proportion. So, although taming it looked difficult, it wasn't as hard as it seemed.
Before long, Shinji had completely tamed the Natural Energy he had absorbed.
Next, he simply had to follow the usual steps, combining Natural Energy with his Chakra in a specific ratio to refine "Senjutsu Chakra."
At this stage, Shinji didn't copy Haku's ratio.
Haku's Chakra reserves were limited, so