After sending White Zetsu Afu away, Youhu finally turned his attention to more important matters.
His performance in front of White Zetsu had been entirely for Brother Obito to see, to let him know how loyal he was.
Though he was just as loyal to Obito when White Zetsu wasn't around, if Obito ever discovered that he was also unwaveringly loyal to the Third Hokage and Danzo, Brother Obito might get jealous and do something extreme.
As for whether Obito had other White Zetsu lurking nearby,
Youhu could sense White Zetsu's presence even before Karin arrived. After she got here, not a single White Zetsu could escape her senses.
That was the power of the Ninja World's greatest sensory technique, the Mind's Eye of the Kagura.
Youhu took out the several scrolls Orochimaru had given him.
The first recorded data from Wood Style research. He could give this scroll to Tiehuo and have him improve Wood Style Transplantation, increasing the chances of success for Izuna's Inheritance, Part Two.
Tiehuo was his first subordinate. He didn't want him to die because of insufficient data while undergoing a Wood Style transplant.
The second scroll contained a large number of Wood Ninjutsu.
So far, he had only mastered a few simple Wood Style techniques, such as Thorn Insertion Technique and Wood Clone. He had secretly learned them by watching Obito and Yamato perform Hand Seals. They were practical little Wood Style techniques.
But if he had the Wood Bloodline, what was the point of using these childish techniques every day?
If he couldn't clap his hands and summon whatever he wanted, how could he show off Wood Style's superiority?
Orochimaru had also said that some Wood Style techniques were beyond a ninja's ability to use. That was pure slander against the Wood Bloodline.