As he strolled through the ruins, Zou Hyuga had already activated his Byakugan beneath his mask, hoping to find clues about the main family on the moon and the Tenseigan amid the crumbling walls.
As he recalled, the moon's Branch Family had staged a rebellion, exterminating the Main Family and taking its place.
The Byakugan plundered from the Main Family, together with those left behind by generations of Branch Family ancestors, had become the Lunar Lineage's rare treasure: a Tenseigan formed from countless Byakugan.
The Byakugan were no ordinary eyes. Even the Otsutsuki out among the stars possessed a pair.
Viewed that way, the Hyuga of the shinobi world and the Lunar Lineage were the ninja clans closest to true Otsutsuki, with a far more authentic lineage than the Senju or Uchiha.
Perhaps the Byakugan also held the secret to attaining Otsutsuki blood.
Toneri was the best example. He was practically the Lunar Lineage's sole survivor, an orphan who truly possessed Otsutsuki blood, and that surely had something to do with the Lunar Lineage's dwindling population.
Had the concentration of their bloodline caused their population to shrink, or had their shrinking population concentrated their bloodline?
Zou Hyuga realized... no matter how his thoughts circled, they always came back to chakra.
Kaguya Otsutsuki had come to the shinobi world for chakra. The Sage of Six Paths and his brother had sealed Kaguya to preserve chakra. The Otsutsuki approaching from among the stars and those lurking in the shinobi world were all after chakra.
In essence, there was little difference between the shinobi world's natural energy and the God Tree's chakra.
This was a war over chakra.
The shinobi world had abundant chakra, enough to sustain tens of thousands of ninja and populations of summoning beasts, with enough left over for him