Isshiki had, in fact, studied the Hyuga Clan of the Ninja World before.
The Hyuga Clan was descended from Otsutsuki Hamura, the second son of Kaguya Otsutsuki. Tracing it back to its roots, Kaguya Otsutsuki could also be considered the Hyuga Clan's ancestor.
There was something especially unique about the Hyuga Clan: they possessed the Byakugan bloodline.
One had to know that this had originally been an eye belonging exclusively to the Starry Sky Otsutsuki Clan!
When the Hyuga Clan first appeared, it truly gave Isshiki quite a fright.
He had even spent a long time studying the Hyuga Clan and their Byakugan.
Only after continuous observation and research did Isshiki gradually set his mind at ease.
At first, he had genuinely worried that the Hyuga Clan might become a clan like the Starry Sky Otsutsuki Clan.
Later, it was proven that he had simply overthought things.
Yes, the Hyuga Clan possessed the Byakugan.
However, the Hyuga Clan's Byakugan and the Starry Sky Otsutsuki Clan's Byakugan were practically two entirely different concepts.
In the hands of the Starry Sky Otsutsuki Clan, the power the Byakugan could wield was more than a hundred or even a thousand times greater than what the Hyuga Clan could achieve.
Furthermore, some Otsutsuki had developed a whole series of Dojutsu from the Byakugan.
For example, Kinshiki Otsutsuki had developed time-space abilities through the Byakugan.
When Momoshiki lacked time-space abilities, they had relied on the time-space abilities of Kinshiki's Byakugan to lock onto the Ninja World's interstellar coordinates.
Not only that, in the hands of the Otsutsuki, the Byakugan could evolve into all sorts of other Dojutsu!
Yet in the hands of the Hyuga Clan, it had basically become a scouting eye.
Forget evolution—they could not even develop Dojutsu from it!
During the time Isshiki secretly