Just like that, Second Tobirama Senju officially "joined" Orochimaru's secret research project without anyone knowing.
Orochimaru naturally didn't tell anyone that he had successfully summoned the Second.
If something like that got out, it would inevitably cause a lot of trouble.
With Tobirama Senju, a "scientific research giant," lending his full support, the research into combining Hashirama Cells and the Sharingan made astonishing progress.
After all, most of Orochimaru's knowledge came from other worlds, while Tobirama Senju was a formidable man who had developed a whole series of overpowered techniques by himself, including the Flying Thunder God Technique, the Shadow Clone Technique, and Impure World Reincarnation!
His understanding of Chakra and his approach to developing techniques far surpassed Orochimaru's.
"This idea... it's sheer genius!"
Meanwhile, the lab would periodically ring with Tobirama Senju's astonished praise.
The more deeply he discussed things with Orochimaru, the more profoundly shaken he became.
Much of Orochimaru's knowledge lay beyond Tobirama's understanding.
Those systematic theoretical frameworks and ingenious lines of reasoning were like a door opening onto a whole new world.
The clash of their minds was like Mars colliding with Earth!
Fresh ideas and bold hypotheses came one after another.
Tobirama Senju even found himself thinking, If only we'd met before I died.
If he had met someone else who was just as passionate about seeking the truth, perhaps they could have found breakthroughs in many of his unfinished studies.
"Orochimaru, how exactly does that head of yours work?"
Once, after they solved a stubborn problem with energy stabilization, Tobirama couldn't help staring at Orochimaru and asking the question that had been on his mind.
"I suppose... I just like to let my imagination run wild."
Orochimaru shrugged, brushing it off as if it were nothing.
He couldn't very well say that much of