While Shisui and the others fought Limbo: Border Jail, Naruto's side seemed exceptionally relaxed.
Sasuke, the strongest of the Uchiha's younger generation, was currently bickering with Tobirama Senju. He had no respect whatsoever for the Second Hokage, who kept calling him an Uchiha brat.
Yet it was from Sasuke that Tobirama Senju learned of the past the Third Hokage had concealed, as well as Danzo's actions.
When he heard that Danzo and Orochimaru had secretly used villagers for experiments, that Danzo had ordered the Police Force to stay holed up during Nine-Tails Night, and of all Root's other filthy deeds, Tobirama Senju's expression grew increasingly grim.
Human experimentation was a necessary step in scientific research. During his time as Hokage, he had conducted human experiments as well.
But the subjects had generally been volunteers, death-row prisoners, and spies. How could they lay hands on their own people? His decision not to make Danzo Hokage back then had been the right one.
What truly angered Tobirama Senju, however, was the Third Hokage's indulgence and his granting of authority to Root.
Judging from the power Danzo and Root had acquired, Danzo was practically Konoha's other Hokage. Though he lacked the Hokage's title, he possessed no less than the authority that came with it.
Thinking of this, Tobirama Senju questioned the Third Hokage, "Monkey, explain exactly what this is about. This isn't how I taught you about the Will of Fire, was it? Why did you delegate power to Danzo?"
"That was a long time ago. I'm about to forget it all."
The Third Hokage hemmed and hawed. Perhaps he had never expected that, after his death, he would be lectured by his own dead teacher.
But he did not dare tell Tobirama Senju the real reason.
He had granted Danzo power in