In the open ground outside Feather Emperor City.
Kaguya stood suspended in the air. Isshiki, shrunk down to an inch tall and seated on her shoulder, said, "This is the command center the Ninja Kingdom established for this war. The Yamanaka Clan's Mind Body Switch Technique sensory secret art detected reverse Chakra reactions pointing here, but they've been concealed by a peculiar barrier..."
"..." Kaguya extended her palm, about to level the entire area.
"Wait, Kaguya..." Isshiki said. "I want to speak with that person."
"..." Kaguya lowered her hand.
Whoosh!
Isshiki returned to his original size, his right eye gazing down at the empty ground below.
Crack! Crack! Crack! Crack!
Four Black Receivers embedded themselves in the earth... The barrier appeared, then shattered!
A moment later... Impure World Shikaku, his face set with resolve to die, emerged from the fortress.
Many years ago, Shikaku had not chosen to revive alongside Hashirama and the others. Instead, he had remained behind in the body of an Impure World Reincarnation, becoming an immortal strategist.
Shikaku raised his cracked face. His gray, lifeless eyes, unique to the Impure World Reincarnation, looked toward the sky as he said steadily, "You must be Mr. Isshiki."
Isshiki calmly asked in return, "May I ask where Uchiha Yu has gone?"
Shikaku replied just as calmly, "He'll be back soon. If you're looking for him, you can wait a little while."
Isshiki shook his head. "If this Ninja Kingdom were still as dispensable as it used to be, no different whether it existed or not, I might consider it. But after all these years of development, it has clearly become a powerful force. Your proposal is rather foolish to me..."
Buzz! The Rinne Sharingan on his forehead opened as Isshiki reached out his hand.
—Universal Pull!!
Whoosh!
Shikaku