Uchiha Yao brought Kabuto back to the Uchiha Clan Compound and had Uchiha Kenji arrange a place for him to stay.
The next day, at the same time.
Tsunade sat behind her desk, looking at Kabuto Yakushi standing before her.
"Kid, are you ready?"
"Yes, Lady Tsunade."
"Good."
Tsunade casually opened the thick tome.
"Page 37. What are the five methods for avoiding minor damage to surrounding healthy cells when using the Chakra Scalpel to remove necrotic tissue?"
Shizune held her breath nervously at the side.
That question was far too tricky.
Those five methods had only been mentioned briefly in the annotations, in a passage so small it was incredibly easy to overlook.
"The first is to use Yin Healing Wound Destruction to rapidly regenerate the surrounding cellular tissue while removing the damaged tissue, minimizing the injury."
"The second is to alter the form of the Chakra Scalpel into a spiral, using the centrifugal force generated by high-speed rotation for precise separation."
"The third..."
Kabuto recited all five methods without missing a single word.
"Page 158. The three triggers for aberrant blood cell proliferation, along with the corresponding suppression theories."
Tsunade's voice grew slightly hurried.
"The first trigger is prolonged exposure to high-density natural energy, which destabilizes the nuclear structure of cells. The theoretical basis for suppression is to use Sealing Jutsu to construct a miniature barrier within the patient's body, isolating the erosion of natural energy..."
Kabuto's answer remained fluent, without the slightest hesitation.
Tsunade snapped the book shut.
"You... are very good..."
"From today onward, stay by my side."
Only after a long while did Tsunade finally say those words.
"Yes, Lady Tsunade!"
Kabuto Yakushi bowed deeply.
At last, a smile appeared on his tightly drawn face.
At the highest conference room in the Hokage Building.