There were too many lunatics in the ninja world. They all wanted to destroy the world and restart it, all while waving the banner of peace.
In truth, Sasuke had a fairly healthy mindset compared to the rest of the Shinobi World. His ability to withstand pressure was exceptionally strong.
His clan had been exterminated, his path to adulthood had been unbearably oppressive, and his own brother had deceived him and pushed him forward. A troublesome idiot was his closest friend, constantly wanting to drag him back to the village. Under those circumstances, the fact that Sasuke did not want to destroy the world was already impressive enough.
A civil war had also broken out within the Otsutsuki Clan on the moon. The main family advocated peace, but the branch family believed that the Otsutsuki Clan had a duty to cleanse the Shinobi World and rebuild it.
In the end, both sides suffered devastating losses, leaving Toneri Ōtsutsuki as the sole survivor. He planned to infiltrate the Shinobi World, find a wife, destroy the Shinobi World, and become the ancestor of the New World.
Unfortunately, Toneri Ōtsutsuki was still young, and Konoha would soon occupy the moon.
Only after Orochimaru summoned Hiashi Hyuga did he learn that another clan possessing the Byakugan actually existed on the moon. However, they were not part of the Hyuga Clan and instead called themselves the Otsutsuki Clan.
Something like that actually existed?
"However, beneath the Hyuga Clan compound, there is indeed an underground space sealed by Sealing Jutsu. There is nothing inside, but perhaps it conceals a way to reach the moon."
As expected, the Hyuga Clan did know some things. They were not entirely ignorant. Over the course of their long history, many things must have been left behind.
It was simply that,