Kagami Uchiha knew some of Kazemori Masaki's secrets and understood that his power was the legendary power of a Sage. Of course, out of respect for the secrets of another person's abilities, he did not know its full nature. He only knew that it had something to do with the elusive natural energy.
Ever since the Ryumyaku had become a matter of importance to Konoha Ninja Village, Kagami Uchiha, who was involved in the project, had learned a little about it. Kazemori Masaki intended to use its properties, which fell somewhere between natural energy and chakra, to develop a Jutsu Formula or ninja tools that could convert natural energy into chakra. He also intended to lower the requirements for learning his own Sage power so that others could master it.
Kagami Uchiha had to admit that he coveted the wondrous power of natural energy a little. Sage power was essentially an advanced stage of chakra training, with the ability to properly use natural energy marking the distinction between the two. As a ninja, he always wanted to become stronger.
Previously, the traditions of the shinobi world had forbidden prying into other people's secrets, so Kagami Uchiha naturally never asked. But since Kazemori Masaki intended to follow the previous Hokage's example and open up access to Sage training, Kagami had to admit that he wanted a chance at it. Hashirama and Tobirama's jutsu belonged to the village and were administered by its leadership. Every member of the leadership could learn them, and those below them could also do so if they had earned sufficient merit and met the requirements.
Since the mission to capture the jinchūriki was related to that project, Kagami Uchiha considered it briefly and decided to give it his all. "Then which one should I choose? There's only