Tsunade had only just returned, so naturally, she could not take office immediately.
In the original story, Tsunade had taken over as Hokage without a moment's rest upon returning to the village because the Third Hokage had already died. There had been no time for a transition.
Now, however, thanks to Su Yu's interference, the Third had survived, giving Tsunade ample time to familiarize herself with the state of Konoha after her long absence.
The first thing Tsunade had to do now was go to the hospital and treat Rock Lee, who might lose the ability to remain a ninja.
Rock Lee's condition was extremely difficult to treat. Even with a medical expert like Tsunade performing the surgery, the success rate was very low, and failure meant death.
Should he stake his life on that slim chance of success, or give up his future as a ninja but live without fear for his life?
That was the dilemma facing Rock Lee.
It was a choice Rock Lee had to make himself. Even Might Guy, who was both a teacher and a father figure to him, had no room to intervene.
But-
"Lee, if you die because the surgery fails, I'll die with you!"
With that, Might Guy flashed his trademark smile, positively radiant.
With such support from his beloved teacher, Rock Lee finally had the emotional backing he needed. He resolutely chose to gamble on the surgery's success.
Rock Lee's choice surprised Tsunade as well.
She had thought he would give up, but... sure enough, they were all fools, just like Nawaki and Dan...
Fortunately, Tsunade eventually consulted a great deal of material and considerably improved the surgery's success rate. With fortune smiling upon them, the operation went very smoothly.
After this experience, perhaps without even realizing it herself, Tsunade