Poison Bird Feather Toxin

Konoha Hospital.

Danzo craned his neck, his face twisted as he let out low, agonized cries.

He was receiving treatment from medical ninja.

At last, an elderly medical ninja shook his head and withdrew his hands, looking helpless.

"What's going on? Why still can't I move my hand?"

Thinking the operation was over, Danzo asked the question with sweat pouring down his face.

"This injury is too strange! The severed tendons and muscle fibers seem... impossible to heal."

The white-haired old man was Konoha's foremost medical Jonin aside from Tsunade. His skills were exceptional, yet now he was deep in thought, utterly baffled.

"What do you mean?"

Danzo listened with mounting alarm and disbelief.

"From what I can tell, this must be some peculiar ninjutsu. Anyone stabbed by it shows no visible injury, but their bodily tissues undergo a change. Put simply, the injury cannot be healed."

"What?!"

Danzo's face drained of color at the old man's words.

"Fortunately, the injury is in your arm. We can amputate it and transplant a new one, freeing you from this affliction..."

Danzo's face turned ashen.

"Is that ninjutsu really so terrifying?"

He recalled the bizarre azure blade of light Long Ye had held.

"Not merely terrifying. Horrifying!"

"Luckily, he stabbed your arm. Had it been your torso, the injury might have stayed with you for the rest of your life!"

Danzo shuddered at the thought. The boy's seemingly endless supply of bizarre tricks sent chills down his spine.

"A brat that terrifying must not be allowed to live. Otherwise, he'll plague us for a century. It seems I have no choice but to deploy Poison Bird again."

The mention of that organization filled Danzo with confidence.

It was one of the trump cards in his hand.

Since beginning its assassination missions, it