By rights, the serum in Nagato's hands should have been safe to inject directly. It was made from Nagato's own flesh and blood, and a single injection would be enough to turn him from a cripple into a normal person.
But Nagato didn't dare!
He was afraid that if he injected himself, he would recover, yes—but he might also become a slave to Uchiha Brahman.
So far, they still hadn't discovered how Uchiha Brahman controlled the people who had been injected with the Sacred Blessing Serum.
They had once stolen some of the raw materials used to make the Sacred Blessing Serum.
They suspected that the flesh and blood were the key, but no matter how carefully they observed or experimented, all they could determine was that the materials were ordinary biological tissue. They hadn't even found any foreign chakra in them.
Aside from those flesh-and-blood materials, they had also studied the nutrient solution used to provide nourishment and energy to people injected with the Sacred Blessing Serum. The results were no different: they couldn't see anything unusual.
That was why Nagato didn't dare risk injecting himself with the Genetic Modification Serum in his hands. There were too many unknowns. Uchiha Brahman was far too mysterious. Although they were now fairly certain that Uchiha Brahman used those flesh-and-blood materials to control people injected with the Sacred Blessing Serum—
But what if? What if they were wrong?
Nagato didn't dare gamble!
He was Kami of the New World! The god of the New World! How could he possibly fall over something like this?
"Orochimaru, you useless fool! I told you to research the Sacred Blessing Serum, and after all this time, all you have to show me is this result! Stealing!"
Nagato angrily slapped the armrest of his wheelchair. This was