Otsu Naruto lunged into an attack on Sasuke, who at first evaded his friend's blows. At one point, he kicked the former Hokage in the chin, sending him flying upward, and then Sasuke appeared above him.
"Shishi Rendan!" with a kick to the stomach, Sasuke slammed Naruto to the ground.
Moments later, the blond rose from the ground and created countless clones, which he sent at his friend. Sasuke grabbed his sword and destroyed Naruto's clones one by one. While the last Uchiha was busy dealing with the clones, some of them formed Rasengans in their hands and charged at him.
"So that's how you want to play it, huh? Shinra Tensei!" using one of the Rinnegan's abilities, Sasuke repelled Naruto's clones.
"Where did you get that eye?" asked Otsu Naruto.
"I didn't think a zombie would still be able to talk. I'll tell you this much I received it from an ally!"
Naruto leapt into the air and created a Rasengan that grew larger with each passing moment. When it reached the proper size, Naruto attacked his friend with it. Sasuke was forced to activate Susanoo to block the Hokage's attack. Once he succeeded, Sasuke grabbed Naruto with Susanoo's hand and slammed him into the ground.
"Damn it!"
Sasuke canceled Susanoo and formed a Chidori in his hand, then in the blink of an eye appeared before his friend, piercing him straight through. "This time you no longer have Kurama's power within you, so nothing will save you."
Naruto coughed up blood, but smiled as his eyes changed. "You forgot that I still have Sage Mode. Besides, I'm an Ōtsutsuki now, so my power is equal to what it was when I had Kurama if not greater." Naruto grabbed Sasuke by the arm and hurled his friend into a nearby building.
"Damn it!"
"Yōton: Rasen Shuriken!" Naruto hurled a lava Rasen Shuriken.
Sasuke used another Rinnegan ability to absorb Naruto's attack, but the Hokage was already above him. At the last moment, Sasuke swapped places with his friend.
"Enton:Susanoo Kagutsuchi!" Sasuke fired a black arrow that, upon striking Naruto, erupted in a wave of black flames.
At the same time, Orochimaru, Jūgo, and Suigetsu were fighting the remaining transformed residents of Konoha.
"This feeling brings back memories" commented the Sannin, recalling the first attack on Konoha years ago.
"With the difference that this time, we're the good guys" Suigetsu added, killing several opponents.
"Less talking, more action."
Meanwhile, in the previous dimension, Rias's group rushed to the place where Himawari had been fighting Kawaki.
"Look at this crater, it must have been a powerful explosion" Sona stated.
"Is it possible that they all died?"
At that moment, a toad appeared before them.
"You don't need to worry about Boruto, he's fine."
"Where is he?"
"He returned together with Kawaki to their dimension to settle things between themselves once and for all."
"He left without even saying goodbye…"
"He did it because he knew some of you would go after him to help" Azazel remarked.
"But does that mean we won't see him again?" Akeno asked.
"I'll try to find a way to reach Boruto's dimension. However, it would be a one-way trip. If you're certain about your feelings, then first become high-class devils. Only then will you be able to leave Rias's peerage and walk your own path" explained the leader of the fallen angels.
"All right."
In Konoha-Gakure…
"Are you sure you want to do this alone?" Hikari asked.
"Yes. Once and for all, I'll deal with Kawaki and restore the village to normal."