After hearing Sarutobi Toru's words, Tobirama Senju's expression remained unchanged. He had already suspected as much. After all, so many research projects were not something one person could complete.
Not to brag, but Tobirama Senju felt that his research ability was unmatched throughout the entire Shinobi World, and his expertise encompassed everything. He had even delved into the rarest fields: life and death, Space-Time, and souls.
Yet compared to this scroll, which blended together nearly every kind of ninjutsu, his own research still fell short by more than a little. Not only did it lack depth, it was even further behind in breadth.
Tobirama Senju was not surprised that he fell short in depth. After all, much of the research had been developed upon the foundation of his own work. It was only natural for later generations to surpass those before them.
But to surpass him in breadth as well was not something one person could possibly accomplish. He did not believe anyone possessed research talent so far beyond his own. The most likely explanation was that this scroll combined the research results of many people.
"Looks like you revived me because you wanted me to help with your research." Tobirama Senju sighed.
Sarutobi Toru merely smiled without replying. In truth, reviving someone depended on who that person was.
Those who had died young in their twenties or thirties were one thing. But some shinobi who had lived into their forties or fifties had already come to terms with life. They did not wish to return and disrupt the lives of those who came after them.
Take nothing else—if the Second Hokage returned to Konoha Village after his revival, who exactly would Konoha listen to?
The revived Tobirama Senju was not some old man in his sixties or seventies like