Ninja World 6, the ruins of the ancient Country of Roran.
Natsu Yuu flashed into existence before the massive Sealing Platform beneath the ruins.
This was where the Dragon Vein had been sealed.
Back then, Naruto had accidentally traveled into the past. Here, he had joined forces with the younger Minato and used the Tai Chi Rasengan to defeat Anrokuzan, who had tried to steal the Dragon Vein's power. In the end, they sealed the rampaging Dragon Vein.
One couldn't help but marvel at Minato's talent. At such a young age, he had already mastered such complex and profound Fuinjutsu.
Though he had relied to some extent on the ancient sacrificial platform here, it was still astonishing that he had managed to seal the power of the entire Dragon Vein with his own strength.
After all, Minato hadn't even inherited the title of Fourth Hokage at the time.
The gap between one ninja and another really was enormous!
Natsu Yuu landed before the Sealing Platform and glanced at the artifact Rei in his hand.
He had just fished it out of the deep sea. It had been lying on the seabed for a long time.
However...
Using this artifact Rei, which could travel through time and space, was more complicated. It required pure Otsutsuki blood to activate, as well as a specific method.
Fortunately, neither of those things was a problem.
He had five Kaguya princesses living at home. That was more than enough to activate the artifact.
But this was an artifact of the Otsutsuki Clan, after all. To avoid any hidden risks when using it...
He'd better test it with the Dragon Vein first.
If the Dragon Vein's power couldn't send him back to the past...
Then he could go find Kaguya and have her help him activate