Uchiha Yuu did not choose to wipe out the sole remaining member of the Otsutsuki Clan's Branch Family. Since the Tenseigan reacted to him, that person's bloodline had some use to him. He could hand Otsutsuki Toneri over to Orochimaru for research into the corresponding bloodline.
This was especially important for cracking blood disorders. Whether it was the Bamboo-Cutter Clan or Uchiha Itachi, their illnesses stemmed from genetic diseases. The blood flowing through Otsutsuki Toneri's body was pure and flawless, so genetic medicine should be developed much sooner.
Warm chakra calmed Otsutsuki Toneri's frightened heart. As medical chakra seeped into his body, it placed him in an extremely comfortable state, and he soon fell asleep once more.
Uchiha Yuu held the Tenseigan in one hand and carried Otsutsuki Toneri in the other, swiftly returning to the Shinobi World.
After he left, several figures appeared in the endless void. Urashiki Otsutsuki stared toward the moon, his eyes half narrowed. After pondering for a moment, he said:
"Senior, I sensed traces of battle in this area. Unfortunately, I couldn't determine where they came from. I think something is blocking my sight."
Momoshiki Otsutsuki floated in the air, his gaze cold and indifferent. His lofty expression softened only slightly when he looked at Urashiki Otsutsuki. The next moment, he passed by him and extended his hand forward. Feeling a barrier, he snorted coldly and said:
"We have searched many places already. What exactly is Kaguya Otsutsuki doing, that she chose to conceal herself? Has she betrayed the Otsutsuki Clan's mission?!"
The Otsutsuki Clan had a strict hierarchy, divided into three levels like a pyramid. The first level consisted of nobles, and Urashiki and Momoshiki were among them. At the very bottom were slaves. They had another identity within the clan: living Chakra Fruits.