Under the pretext of assisting Orochimaru with research into the Cursed Seal, Nawaki easily obtained Jugo's cells and stored them in the Wish Power System, gaining a bloodline template.
Since the original work never clearly named this bloodline, and "Cursed Seal Bloodline" sounded too unpleasant, he gave it a rather xianxia-style name: "Immortal Root."
The Immortal Root was described in the system list as follows:
Immortal Root: S-rank bloodline. Requires 100 million Wish Power points to exchange. Continuously absorbs natural energy and transforms the body into a Sage Body. Has the side effect of eroding consciousness; requires a sufficiently high level of spiritual and physical cultivation to become completely immune.
Although Jugo's bloodline was inferior even to ordinary elemental bloodlines in terms of combat ability, the system still classified it as an S-rank worth 100 million Wish Power points. This showed that its potential was enormous—perhaps even comparable to Wood Release and the Sharingan.
After obtaining the Immortal Root, Nawaki did not exchange for it immediately. One hundred million was no small sum, and his current Wish Power reserves were somewhat tight. He could not possibly spend that much all at once.
Moreover, according to the system's description, the side effects of the Immortal Root could not be eliminated through mental strength alone as he had previously guessed. It also placed certain demands on the physical body, and he might not be completely immune to it. Therefore, he felt it would be safer to exchange for this bloodline after completing the Sage Body.
The clone avatar had been completed, and Nawaki could finally begin testing his earlier idea.
That night, after parting ways with Orochimaru, Nawaki began attempting the reverse Eight Inner Gates!
This was a sealed cultivation chamber, surrounded by barriers and built with various special materials.