Returning to the subject of combat power.
Over the course of that year, Tobirama overcame quite a few challenges, producing a total of five Large Mangekyō and two Giant Tenseigan.
Yes, you heard that right.
There really were that many.
A single Large Mangekyō required more than three hundred Mangekyō Sharingan.
Only Konoha's enormous wealth, along with assistance from the other shinobi villages, had kept Tobirama's experiments going.
Of course.
These Mangekyō were all the most ordinary, blank-slate versions. Compared to the Three-Tomoe Sharingan, they merely had more dōjutsu power and better dynamic vision.
They had no dōjutsu abilities whatsoever.
After all, if every eye had to have a dōjutsu engraved into it, wouldn't Sasuke and the others die from the pain?
Those five Large Mangekyō were now stored in Konoha's Research Institute.
They were arranged at different points in the shape of a five-pointed star.
Their function differed from that of the Tenseigan. They could not launch attacks, but they could replenish a Mangekyō's dōjutsu power.
By imitating the Tenseigan's connection, Tobirama had linked them to Sasuke, Itachi, Izumi, and Fugaku.
Yes, Sasuke was connected to two of them.
After all, his time-based dōjutsu could save lives at critical moments.
Previously, it was only because Sasuke had desperately used Fleeting Beauty to hold Isshiki back that the Chains of Heaven had been successfully deployed.
However, Isshiki seemed to have figured out the ability of Sasuke's eyes.
On one occasion, when Tobirama went to chat with Isshiki and fish for information along the way, Isshiki casually remarked.
"That brat from back then had a time-based dōjutsu, didn't he?"
Tobirama considered two possibilities in response to Isshiki's words.
First, Isshiki was smart enough to work out from the changes in what he saw that time had stopped around him.
Second, Isshiki