The Ninja Academy's Incredible Legends (37) The core of civilization is thought, and ninjutsu can certainly be scientific
Kekkei Genkai were quite rare talents, and ocular Kekkei Genkai were rarer still.
Generally speaking, the earlier a Kekkei Genkai awakened, the better the person's aptitude. But there had to be limits. Awakening a Kekkei Genkai at too young an age not only placed a heavy burden on the body, but also greatly increased the likelihood of hereditary Kekkei Genkai diseases flaring up. Kimimaro of the Kaguya Clan and Itachi Uchiha were both typical examples.
Another problem that plagued young Kekkei Genkai users was the conflict between their poor control and their powerful Kekkei Genkai aptitude.
Kekkei Genkai such as Ice Release, Lava Release, and Scorch Release were especially likely to hurt people when they suddenly erupted. Haku's kind-hearted family, the retainers of Momochi Zabuza, had fallen victim to this. Jugo, who possessed the Sage Body, had also been too gifted and unable to control himself, eventually becoming an irrational killing monster.
The Byakugan was much better in that regard. It basically had none of the flaws mentioned above, nor did it consume enormous amounts of chakra after activation like the Sharingan.
The only things to be wary of were the main family's "Caged Bird" Cursed Seal and the covetous eyes of those with ulterior motives.
Kaoru Hyuga's family had been thrown into a panic by her sudden awakening of the Byakugan Kekkei Genkai and had suffered quite a bit because of it, leaving the young girl highly guarded.
"Although I don't know what you're worried about, I still have to thank you, Kaoru. You've been a huge help."
For a team made up of rookies, having one or two useful specialties brought plenty of benefits.
Avoiding powerful enemies and dangerous areas was one thing, but finding prey that could be captured and locating water sources were also extremely difficult