Mount Myoboku

"Altering cognition... isn't that Shisui's Kotoamatsukami?" Kabuto said.

Among the known ninja techniques capable of altering cognition, there was only Shisui's Kotoamatsukami.

And the Uchiha's Izanami.

Everyone else's Genjutsu directly controlled people.

Tobitake Tonbo nodded. "It's a large-scale Shinjutsu that can alter the cognition of everyone in the Shinobi World—an ultra-wide-range Kotoamatsukami. It's even more powerful than the Genjutsu of a young girl I encountered before."

He explained the forbidden technique of Yakumo Kurama's family.

It was a forbidden technique developed at the cost of many lives, capable of altering cognition, and was very similar to the Ōtsutsuki's Shinjutsu.

However, the Kurama family's forbidden technique had a rather limited range.

It could only alter others' cognition when they came into contact with the Kurama family.

In other words, it was a targeted alteration.

It felt somewhat like causality. The technique could only activate when someone formed an informational causal connection with the Kurama family.

The Ōtsutsuki's Shinjutsu, on the other hand, was simply absurd—it could alter the cognition of the entire Shinobi World.

From what Tobitake Tonbo knew, the future Eighth Hokage, Shikamaru, had managed to temporarily break through the enemy's Shinjutsu with his own intelligence, only to be altered again afterward.

He did not know much—only a little about the characters and events from Naruto Shippuden.

"Oh? The Kurama Clan once had such a forbidden technique? Can we get it for research?" Orochimaru's desire to explore flared up again.

He had heard of this clan before and knew that a genius would emerge from it every so often, but he had never expected such a secret to exist.

This ability really needed to be guarded against.

No wonder Tobitake Tonbo had not stopped pursuing strength after the war ended. Instead, he had worked hard to grow stronger during this