That also meant Nako and the others simply could not learn advanced techniques like the Yin-Yang: Dual Extremes Seal that Uchiha Makoto himself had mastered, which required a balance of yin and yang.
Aside from Madara, practically no one in the Uchiha Clan possessed yang release chakra.
But the Yin Seal was different.
It was Tsunade's most important skill, a sealing jutsu that primarily exploited the properties of yin release chakra.
Its principle was to store excess chakra in the diamond-shaped mark on the forehead during everyday life, then release it all at once when needed, gaining explosive strength, speed, and recovery, and even enabling the use of certain special forbidden techniques.
This technique was practically a last-ditch trump card tailor-made for the Uchiha Clan!
If the three of them could master the Yin Seal...
Leaning against a tree trunk, Uchiha Makoto watched the three training hard in the distance and quickly weighed his options.
That would give each of them another ace, a "battery" that could turn the tide or save their lives at a critical moment. With the amount of chakra they now produce through practicing Life Return 10.0, especially their relative surplus of yin release chakra, they should have enough to support the seal's initial construction.
But... the risks were just as great.
First, the difficulty of teaching it. The Yin Seal's formula is extremely complex, involving precise chakra control and knowledge of sealing jutsu.
Teaching them would take a huge amount of my time and energy. It might even expose how deeply I've researched sealing jutsu. After all, this stuff counts as advanced knowledge even in Konoha. Whether Nako and the others could learn it is another question.
*Second, the risk of exposure. Once they use the Yin Seal, there's no hiding that conspicuous diamond-shaped mark