In an unnamed underground cavern in the Shinobi World, White Zetsu had just reported what he had heard about Fugaku Uchiha.
Madara Uchiha slowly opened his eyes, a hint of surprise on his aged face.
"The fact that he can use Mini Complete Susanoo means he's awakened the Eternal Mangekyo Sharingan.
Without the Eternal Eye, he couldn't produce a true Complete Body. Fugaku has no siblings. Has Uchiha Tenjo ever shown a Mangekyo Sharingan?"
"No. Since Fugaku Uchiha became Clan Head, Uchiha Tenjo has been promoted to an elder of Konoha. He hasn't fought anyone in a long time.
Even if we wanted to observe him, we couldn't get any useful intelligence."
Madara leaned back in his chair. "The Uchiha Stone Tablet went missing for a while. Fugaku must know how to awaken the Eternal Mangekyo Sharingan.
Now that he's awakened the Eternal Eye, I'm afraid he's also discovered how to advance to the Rinnegan. The question is whether he can decipher the Stone Tablet and find a way to awaken it. Things are getting more and more interesting.
And harder to predict. But that only makes it more interesting. To awaken the Eternal Eye and still remain the same person... I must admit, I can't quite figure Fugaku out anymore."
"Lord Madara, what do we do next?"
"Heh. There's nothing we can do. My body is old and could give out at any moment. If Guangtai and Nagato faced Fugaku now, they'd only be throwing their lives away.
I know the power of the Eternal Eye firsthand. Even if Nagato gains full control of the Rinnegan, he may still be no match for Fugaku Uchiha.
The Rinnegan isn't Nagato's own, after all. He can't draw out its true power, and using it takes a terrible toll on his body.