Itachi had indeed found the fundamental weakness of Observation Haki.
But unfortunately...
The weakness of Observation Haki was that it had no weakness.
It was just like Kizaru's Glint-Glint Fruit.
Everyone knew it was a Devil Fruit.
Sea-prism stone could counter it, seawater could counter it, and Armament Haki could counter it.
But in an actual fight, you simply couldn't counter it.
Observation Haki could sense danger, detect malice, and even notice someone watching from far away.
In theory, there was only one way to evade that perception-
Don't look at the other person.
Don't create danger.
Don't give off malice.
Make yourself completely nonaggressive and nonthreatening.
But against someone that powerful, how was making yourself "harmless" any different from asking to die?
Dozens of kilometers away.
Itachi abruptly stopped.
His feet seemed pinned in place by an invisible force.
Kisame turned his head, looking at him with confusion in his small eyes.
"Itachi, what's wrong?"
Itachi didn't answer immediately.
His Sharingan shifted slightly, and a thin sheen of sweat appeared on his forehead.
"...Nothing."
"I just suffered a mental shock."
Kisame didn't press him.
But his gaze passed over Itachi's shoulder and turned toward the distance.
Dark clouds churned in the sky in that direction.
It wasn't a natural change in the weather.
It was the aftermath of some immense power spilling out and stirring even the atmosphere, though Kisame was too far away to sense the power itself.
But the next moment, Kisame's pupils narrowed slightly. His clone had been destroyed, and all its information flowed back to his real body.
On the battlefield.
After Miki Yūya dealt with Itachi's clone, a brief, deathly silence settled over the area.
Everyone's eyes were fixed on him.
Their expressions varied.
But they all shared the same shock.
At