The Old, Weak, Sick, and Disabled Duo vs. Healthy Nagato and Shisui (5k First Update)

Naruto was dazed for a moment. When he came to, he was no longer surrounded by a city of towering buildings, but by ruins filled with broken walls and rubble.

"Where are Pervy Sage and Brother Mu Yue?"

Naruto then realized that half the group was missing.

"Six people are gone."

Kakashi had also regained consciousness and noticed the abnormality in their group.

"This should be the small fluctuation Mu Yue-sensei mentioned."

Kakashi analyzed the situation.

"They may have arrived ahead of us and are already fighting the enemy on the battlefield, or they may not have arrived yet."

"Did only an instant really pass?"

Killer B curiously looked around, trying to find something that could help determine the time, but there was nothing of the sort among the ruins.

"No, can someone explain what happened?"

Obito looked at everyone with a completely baffled expression.

He remembered helping an old grandmother just moments ago, only to find himself in a field of ruins in the blink of an eye, while Kakashi and the others were saying things he could not understand.

"Obito, are you okay? Did you hurt your head while traveling between worlds?"

Nohara Rin asked with a worried expression.

"Traveling between worlds? What the hell?"

Obito scratched his head, his face full of question marks.

"Did you lose your memory? Your name is Hatake Obito, and the person you admire most is your older brother, Hatake Kakashi."

Kakashi said solemnly.

"Admire my ass. Kakashi, who are you trying to fool?"

Obito complained speechlessly.

"Looks like the problem isn't serious. But to be safe, Little Rin, you should still examine Obito's body."

Kakashi gave his diagnosis.

"Wait, isn't my original body doing some mission with you guys?"

The Obito Shadow Clone noticed a problem. Where was his original body?