"I have always kept my word."
In high spirits, Tobirama Senju raised an eyebrow. "Kid, this time, I'll teach you a Forbidden Technique!"
"Unlike that Will of Fire of yours that's all empty talk, my broad-mindedness is enough to let me teach even a Forbidden Technique to an evil Uchiha brat like you..."
Tobirama Senju chuckled.
Seisui frowned slightly. Tobirama Senju's manner was extremely abnormal.
After spending so much time with him, Seisui was certain that the old man was about to pull something!
That expression and demeanor were exactly the same as when Seisui was planning to mess with Tobirama. Others might not notice, but Seisui understood it all too well...
Tobirama Senju greatly enjoyed the sight of Seisui's furrowed brow and slowly said, "The technique I'm going to teach you is a Forbidden Technique I developed independently—the Mutual Multiplication Explosive Tag Technique!"
"I've classified this ninjutsu as A-rank. Its principle is to use Explosive Tags to continuously summon more Explosive Tags, concentrating them at a single point for successive explosions..."
"If used properly, its power is so great that even a Tailed Beast would struggle to withstand it!"
Seisui blinked. He actually knew the Mutual Multiplication Explosive Tag Technique...
When Seisui had made Asuma think harder, Tobirama Senju had sensed trouble and proactively brought up their previous wager. He demanded that if Seisui lost, he had to agree to his conditions and could not harm Konoha.
Seisui's reply had been, "Even if I win, you were once—and still are—my idol. I won't make you kneel and apologize then. It'd hurt me to see it..."
With that gentle approach, he had successfully gotten the Mutual Multiplication Explosive Tag Technique out of him.
Since mastering this technique, Seisui had not yet had the chance to study it.
First, its origins