When Hanzo of the Salamander saw Tsunade, Orochimaru, and Jiraiya arrive with reinforcements, he considered his options briefly before releasing a large amount of poison. He then organized the Amegakure ninja and swiftly withdrew. After fighting for half the night, they had depleted much of their chakra and would be at a severe disadvantage against the fresh Konoha ninja.
Orochimaru and Jiraiya led their forces in pursuit for a while, but Hanzō's poison proved so potent that they had no choice but to halt the chase. They organized the ninja to clear the battlefield and recover their fallen comrades.
Then Orochimaru and Jiraiya came to Qingyun's side and watched silently as Tsunade knelt on the ground, pouring chakra into Dan Katō's body as though her reserves were limitless, converting it into the healing energy of the Mystical Palm Technique.
However, Dan Katō was gravely wounded. Several of his internal organs were damaged, half of one kidney had been sliced off, and his intestines had spilled out along with his blood. Even if Qingyun brought out the Blood Bodhi, he could not save Dan Katō, let alone Tsunade's Mystical Palm Technique.
"Cough... Tsunade, don't waste your strength. Getting to see you one last time is enough for me. My only regret is that I never became Hokage and couldn't keep my promise to you.
"Tsunade, don't grieve. This is where my journey ends. One last thing—sorry for the trouble, but please take care of my niece, Shizune. Her parents died in the war, and I don't want her to be left an orphan."
Suddenly, as though experiencing a final rally before death, color returned to Dan Katō's face. He coughed, interrupted Tsunade's treatment, and spoke his final wishes.
"No! Dan, don't leave me! I won't let you die!"
Tsunade helplessly watched