"Coming out of Ryūchi Cave really felt awful, like entering a desolate world."
While attempting Sage Transformation, he could absorb natural energy without restraint in Ryūchi Cave, but outside, absorbing natural energy became painfully slow. The speed was infuriatingly sluggish!
He would probably need to stockpile natural energy before a battle.
Hearing Uchiha Yuu's complaint, Orochimaru stopped and patiently explained:
"The Three Great Sage Regions possess an abundance of natural energy. To achieve Sage Transformation outside, one needs time to accumulate it."
"So preparations must be made before battle."
Uchiha Yuu was not only his disciple now, but also an exceptionally valuable test subject. Orochimaru needed Uchiha Yuu's Sage Mode to study the next stage of Sage Transformation and turn their theoretical guesses into reality.
"Next, cooperate with me on some experiments. Let us discuss Sage Transformation."
He could hardly wait to study Uchiha Yuu's body. Reaching the desired results without harming Uchiha Yuu would take some time.
"Fine, Teacher Orochimaru. I also want to understand how radioactive power affects Sage Transformation. There is something else I need to tell you in advance."
Yuu explained the so-called side effects. Even if Uchiha Yuu did not fight, he continuously emitted radiation while undergoing Sage Transformation. Even if he deliberately absorbed it, there was still danger, so he told Orochimaru not to get too close.
"What a troublesome fellow. Still, compared with developing Sage Mode and the benefits it will bring to the upcoming experiments, this degree of risk is acceptable."
He led Yuu to a hidden laboratory. No one knew how many laboratories Orochimaru had hidden beneath Konoha. Some secret experiments could not see the light of day and could only be studied alone. Now, with Uchiha Yuu's help, he could have an assistant.
The laboratory contained many half-human, half-snake monsters,