Judging from Minato Namikaze and the others' reactions.
Her memories must have been sealed by Space-Time Ninjutsu.
The formula itself only possessed this function.
The energy powering it was the Dragon Vein's power.
Kamui possessed Minato Namikaze's Special Kunai.
She used the Special Kunai to cast a sealing technique on the Dragon Vein.
That kunai... probably wasn't Minato Namikaze's... Hyuga Sho meant that it wasn't the kunai of this world's Minato Namikaze.
It had come from Kamui's world.
She had helped herself seal the Dragon Vein, and after she became strong enough, she would return the favor by helping Kamui resolve her crisis.
Equivalent Exchange.
To be honest.
Hyuga Sho was quite interested in things like Parallel Worlds, the future, and the past.
And naturally, all exploration had to be built on the prerequisite foundation of becoming stronger himself.
In the short term... at least eight or ten years, perhaps even more than a decade, Hyuga Sho estimated that he wouldn't open the seal and travel to the world where Kamui was located.
Before that.
It was because he had defeated Anrokuzan, who was also known as Mukade.
He had plundered the Dragon Vein's power from him and restored the memories that had been erased.
And to prevent himself from forgetting everything.
Kamui had also left a backup plan.
She had dictated certain things to him, which he had written down in his notebook.
Among them were a diary-like account of events, along with some hints.
And... a prophecy.
The purpose was to let him understand what had happened after his memories were sealed.
After the meal.
Hyuga Sho got to his feet.
He walked alone through the vast expanse of Rōran.
Taking a scroll from his Ninja Tool Pouch, he unfurled it and read the characters recorded on