And it was still growing stronger!
"Buzz—boom!"
Empowered by Yuu's sword intent, Shusui's blade became several degrees more resplendent.
An even more dazzling and terrifying sword pressure continuously poured into that "aurora" that seemed to pierce through heaven and earth.
Yet beneath its unparalleled brilliance and splendor lay an exceedingly terrifying power.
"Have you released all the power I used to nurture you over the years?" Yuu murmured as he looked at the "aurora" that seemed to run through heaven and earth, sensing its dreadful power. It had been twenty years since he acquired Shusui.
Ever since Yuu had obtained it in his youth, Shusui had constantly been nurtured by him.
Especially during the decade or so since the end of the Third Shinobi World War, Yuu had continuously nurtured Shusui with supreme Armament Haki, the sword intent of a Great Swordsman, and even the natural energy of All Creation.
It had broken through the limits of Supreme Grade Swords and evolved into a Supreme Grade Sword!
No one knew how much of Yuu's Armament Haki, sword intent, the power of All Creation, and natural energy had dissipated during the nurturing process. Yet some of it had remained within Shusui's blade. Now, most of that energy had been completely stimulated by Shusui and erupted forth.
The power accumulated over twenty years of nurturing was what formed such a terrifying might.
"I can already feel your intent, Shusui." Yuu gripped Shusui's hilt, and his gaze suddenly sharpened.
Terrifying sword intent roared out from Yuu's body.
Combined with the horrifying sword pressure of that aurora-like light that seemed to pierce heaven and earth, and enhanced by the pinnacle of the Creation Path, this terrifying pressure seemed to transcend the canopy of the sky itself.
"Obito, I originally wanted to have some fun