His battle with Hiruzen Sarutobi made Shinichi keenly aware of one thing—he had been a little too cocky.
Although Sage Art: Lightning Release Chakra Mode was already one of the finest enhancement techniques available to lightning-affinity shinobi, Shinichi still felt considerable pressure facing Hiruzen Sarutobi in his prime.
As the "Professor of Ninjutsu," Hiruzen Sarutobi had mastered all five elemental releases. With Enma's formidable support, Shinichi truly struggled to gain an overwhelming advantage without using his real trump cards.
But... what if he added his other trump cards to the mix?
—Ryujin Jakka, the ultimate blazing flames capable of burning everything to ashes.
—The complete Six Eyes, with the Limitless Cursed Technique allowing him to disregard every attack that did not target the soul, and the Reverse Cursed Technique granting him destructive power comparable to a tailed beast's.
—Shinigami Kido, powerful secret arts capable of directly affecting the soul.
—The Rumble-Rumble Fruit, whose power would likely become even more terrifying if combined with Lightning Release Chakra Mode.
—An advanced sage body, which maximized his regeneration and chakra reserves, allowing him to fight prolonged battles. He was now extremely close to Hashirama Senju's strength at his peak. Wood Release was powerful because Hashirama Senju wielded it, not because Wood Release itself was powerful. Still, it certainly was an essential ninjutsu for traveling away from home, so he really needed to find time to develop it.
With the Ōtsutsuki yet to appear, no one in the shinobi world could match him!
"Even an elderly Madara with the Rinnegan would get two slaps from Shinichi and be asked whether he wanted to dance!"
But even so, Shinichi still chose to—lie low!
He was Uchiha Shinichi, a man who took the "way of survival" to its absolute limit!
In his plans, he absolutely could