Uchiha Shunichi knew a thing or two about Senjutsu Chakra.
But the main sources were actually only two: the future Naruto, and the First Hokage, who could clap his hands and summon whatever he wanted.
As for Orochimaru's Cursed Seal, it could only be considered a defective version of Senjutsu. Although it had similar functions, it placed an enormous burden on the body.
For that reason, Uchiha Shunichi had never planned to incorporate Orochimaru's Cursed Seal into his power system.
But even the most meticulous plans could go wrong. The combination of the Cursed Seal and the Yin Seal seemed promising, yet Uchiha Shunichi simply could not put his mind at ease.
Even so, the power boost brought by Sage Mode had not weakened in the slightest. It was even stronger than Uchiha Shunichi had expected.
After entering Sage Mode, Uchiha Shunichi's combat strength increased by at least threefold.
Of course, that referred to his normal combat strength. Self-destructive techniques were not included, and Uchiha Shunichi had no intention of wasting time testing them.
As he carefully sensed the Cursed Seal on his body, Uchiha Shunichi suddenly discovered that whenever he was not using Senjutsu Chakra, it would gradually gather on its own, just like... the Yin Seal.
After probing further, Uchiha Shunichi did not sense the boundless emptiness Tsunade had once described. No matter how much Senjutsu Chakra he poured into it, nothing happened.
After several attempts, Uchiha Shunichi could only give up for the time being.
Maintaining Sage Mode, Uchiha Shunichi cautiously opened the first of the Eight Gates.
Boom!
Uchiha Shunichi felt the chakra inside his body instantly go berserk, completely beyond his control.
Fortunately, Uchiha Shunichi's chakra control was exceptionally strong. Fortunately, he had only opened the first gate. Otherwise...
His heart still pounding, Uchiha Shunichi