Ibuse's purple venom sac slowly swelled, seeping a visible purple mist.
Jiraiya and Orochimaru had already retreated more than thirty meters away.
They had injected themselves with Tsunade's antidote beforehand, but it did not grant complete immunity.
After spending so long in the poisonous mist, their lips and fingertips had begun to turn purple.
But Tsunade did not retreat.
She stood nine meters in front of Hanzo, facing the purple poison mist rolling toward her.
She did not even raise a hand or hold her breath.
The mist enveloped her, seeping in through her mouth, nose, skin, and wounds.
The toxins coursed through her blood vessels toward her heart, trying to paralyze her nerves and respiratory muscles.
But the Hashirama cells worked furiously inside her, breaking down, neutralizing, and expelling the toxins like a furnace.
Sweat seeped through her skin, tinged faintly purple, and the rain quickly washed it away.
Hanzo's pupils contracted slightly behind his mask.
He had seen countless people succumb to Ibuse's poison.
Some managed to struggle for a few seconds; others collapsed into convulsions before they could even scream.
He had never seen anyone stand expressionless in his poisonous mist as though it were ordinary rain.
It all happened quickly, but Hanzo was not particularly surprised.
During his recent battle with Jiraiya and Orochimaru, he had already noticed something amiss.
Neither had worn a gas mask, yet they had kept fighting in his poisonous mist for so long.
Their movements had still been affected, but their resistance was absurdly high compared with ordinary people.
That told him they were not naturally immune to the poison.
Someone had developed an antidote specifically for Ibuse's venom and injected them beforehand.
The person most likely to have done that now stood before him.
Hanzo said nothing more.
If poison