"Black Zetsu..." Sasuke's heart gave a sudden jolt.
No, they had already killed Black Zetsu. What was that?
A thought flashed through his mind.
"Shikamaru," Sasuke's voice rang out urgently through the Mental Link, which was about to cut off. "I see it. Hidden in Kaguya's sleeve is something exactly like Black Zetsu!"
"What?" Shikamaru, far away in the Leaf, froze.
"Black Zetsu is Kaguya's will, but will... can exist in many forms." Sasuke's thoughts raced. "Maybe the one we killed was just one of them. Hidden in Kaguya's sleeve is another of her wills—or rather, her 'operating system'! When she was forced to switch dimensions just now, that thing came out to stabilize the portal!"
A spark seemed to flash through Shikamaru's mind.
"I get it! That's her true core! Kaguya's main body is powerful, but she isn't good at precise control. All her jutsu and dimensional shifts are controlled through that thing, which is like Black Zetsu! That's her weakness!"
"How do we force it out?" Naruto asked.
"Physical attacks won't work," Sasuke said. "It's hidden inside Kaguya, and it's one with her."
"Then we'll..." Shikamaru's voice took on a hint of madness, even he hadn't noticed. "...annoy it out."
"Annoy it out?"
"Naruto, remember how you dealt with Nagato?" Shikamaru asked.
"You mean... that?" Naruto froze for a moment, then understood what Shikamaru meant.
"Right," Shikamaru said. "That thing is pure will. The only thing that can oppose will is stronger will. Naruto, use what you're best at to shake it, disrupt it, and make it get the hell out of Kaguya's body!"
"Sasuke, watch and find the pattern in the Chakra flow between that thing and Kaguya. Kakashi-sensei, Sakura, Toneri, I'm counting on you to buy them some time!"
"Understood!"
"Roger!"
"Leave it to me!"
Despite