Naruto and Korra were ready to fight Sasuke, in their battle stances. Korra started Firebending at Sasuke. Sasuke dodged and went into his Susanoo Mode. Korra tried to bend the Susanoo Flames, but failed.

"Why can't I bend this fire?" Korra said. "I thought Firebenders can bend any fire!"

"Maybe because it isn't purely fire." Sasuke said. "It is far more chakra than fire, so it is more refined, meaning even the most skilled Firebender would fail to bend it." Naruto tried to go into his Biju Mode, but there was a conflict in his mind.

"Naruto, what the hell are you doing siding with the Avatar!" Dark Naruto said.

"Shut up, evil half!" Naruto said. "Get out of my brain and leave me alone!"

"Why you insolent traitor!" Dark Naruto snapped. "I gave you all the power you had in Republic City and you treat me like shit? Shame on you!"

"Well done, Naruto." Kurama said, entering. "You have been purified. Let go of your hate so you can cleanse yourself of the darkness in your mind."

"Don't listen to the orange fox!" Dark Naruto said. "Embrace the darkness!"

"SHUT UP EVIL ME!" Naruto screamed, as the orange fox opened his mouth of razor sharp teeth, and bit Dark Naruto by the waist. The knife blades in Kurama's mouth stabbed Dark Naruto in the waist, splitting him in half. Blood exploded from Dark Naruto's broken body. Naruto's Dark Sage Mode turned yellow again, since Naruto was fully purified. Naruto charged at Sasuke full force. Sasuke did a Susanoo Flame Jutsu and aimed it at Korra. Korra entered the Avatar State and dodged the attack. Korra made a circle from all her elements flew to attack Sasuke. Naruto and Korra chased Sasuke through Republic City, shooting fireballs and Sage Rasen Shurikens at Sasuke. Sasuke landed on a parking deck and stopped. Naruto and Korra went on the parking deck to follow him. Korra used her Metalbending to throw Satomobiles at Sasuke, but he just broke them with the Susanoo Flames. Naruto shot a Tailed Beast Ball as a golden yellow beam, blowing Sasuke away, destroying every building in its path. Sasuke landed back on his own tower, standing at the top of the tower. Naruto used the Tailed Beast Bomb Rasen Shuriken, destroying the tower, sinking it into the ground. Korra caught up to Naruto as both were suspended in midair, watching the tower sink into the ground. The tower sinking caused an 9.0 magnitude earthquake, destroying Republic City, toppling buildings, crushing streetlights, and even destroying the Spirit Wilds, making the Spirits turn into Dark Spirits, enraged that their home was destroyed.

"What happened to Sasuke?" Korra said.

"Fuck Sasuke, we have some kind of Dark Spirit problem." Naruto said.

"Dark Spirits can't be killed, so how do we deal with them?" Korra asked.

"They can't be killed by anyone in your universe, but my universe is a different story." Naruto said. Naruto used Giant Tailed Beast Rasengans, shooting them at the Dark Spirits, making them burst into puffs of smoke.

"Keep it up!" Korra said. "Kill the Dark Spirits!" Naruto did a Multi Shadow Clone Jutsu and used Magnet Release Rasengans, killing several Dark Spirit birds. Sasuke's cry echoed in the burning apocalyptic wasteland that was the new Republic City. Korra and Naruto heard Sasuke and went to check on him. Sasuke was under some broken steel girders crashed on the charred remnants of the Spirt Portal. The portal was still there, but it was weak and all the spirit vines surrounding were scorched and burned, appearing black in color. Sasuke was bleeding on his back as he was being crushed by the steel beams.

"Naruto, please save me." Sasuke said.

"I don't want to save you, because after all that you have done, I can never trust you."

"Wait." Korra said. "Violence is not the answer."

"What do you mean?" Naruto asked.

"Since my connection to Aang has been lost, Tenzin sent me Aang's wisdom in a book he wrote. There was a passage in the book that says that forgiveness is the first step you have to take to begin healing."

"Ok Sasuke, I forgive you." Naruto told Sasuke. Korra Metalbended the girder apart and started healing Sasuke, fixing him up good as new.

"Thanks for the forgiveness, Naruto." Sasuke said. "It was not me that was behind all this."

"If you weren't behind all this, then who was?" Korra asked.

"A mystical woman who has a strong connection to spirits known as Samoda, a Bloodbender witch who was the leader of the Heian Society and she pulled the strings of the Triple Threats." Sasuke explained.

"It's all connected now." Naruto said. "We just need to kill Samoda and get on with our lives."

"It's not that easy." Sasuke said. "She can infuse Bloodbending with Spirit energy, making a powerful and deadly bending technique."

Meanwhile, at the Heian Base in the North Pole, Samoda sat on her throne, wearing a purple suede coat and a black dress with black heels, along with a black fedora on her head. She had light skin and blue eyes, with black hair with Water Tribe beads in it. She smiled as she held her hands together in Mr. Burns fashion, plotting her evil plan.

"Everything is going according to plan." Samoda said. "Sasuke served his purpose, so now all we have to do is rebuild Republic City in a new and stylish image." Samoda applied red lipstick to her lips while she was plotting her evil schemes. She went for her pipe and smoked on it in a sexy fashion.

"Boss, what shall we do?" Two Toed Ping said.

"Are you familiar with Team Avatar in any way?" Samoda asked.

"I know this guy named Mako and his brother Bolin, and this guy named Varrick, who hired me and the Triple Threats before."

"I heard he adapted the Boy in the Iceberg into a musical." Samoda said. "Steal the film reel for me, I need to have a private screening because I love that adaption."

"Will do, boss." Two Toed Ping said.

That's the end of Part 16!