According to Kabuto's memory. Danzo was currently hiding in Orochimaru's northern base.
Orochimaru who was planning to disguise as the Kazekage was currently still on his way to Konoha.
Tetsuya, Yuzume, Kimimaro and Karin were sent to kill Danzo and liberate Orochimaru's prisoners while the others took care of Orochimaru and the impending Konoha crush.
It was only supposed to be Tetsuya, Kimimaro and Karin who went after Danzo but after Yuzume's insistence, the third Hokage agreed to Yuzume since it was already confirmed that Danzo really transplanted Sharingans onto himself.
As for Karin, She was given the position of chunin ahead of time and dropped out of the exam since they really needed her powers to track Danzo and not allow him to escape. It was also to protect her in case Orochimaru sent assassins after her.
They then set off after the meeting was done.
…
1st august
They finally arrived nearby Orochimaru's base. Tetsuya then asked Karin to scan the chakra signals in the base. The base was mostly empty except for prisoners since most of people were sent to Konoha.
Karin then locked onto Danzo's chakra since the sharingan's chakra was easy to distinguish.
As they were navigating the base, they saw the prisoners who were in the cells but ignored them for now since Danzo was their priority.
But as they passed a locked cell, a man with curse mark all over his body suddenly broke his cell door and rushed towards Tetsuya. Tetsuya immediately noticed that it was Juugo.
Tetsuya immediately dodged and tried to reason with him but he didn't listen at all.
After Tetsuya just dodged his attack for a while, Karin used the adamantine chains to bind him.
Seeing that he still tried to struggle, Yuzume used a sharingan genjutsu on him to make him faint.
As they were arguing on how to deal with Juugo, Karin suddenly interjected by saying that Danzo was moving and that multiple people were heading towards them due to Juugo's fuss earlier.
Tetsuya then decided to let Kimimaro take care of Juugo and the other prisoners while they headed towards Danzo.
As their pursuers appeared, they were the root ninjas that Danzo smuggled out of Konoha when he ran away.
Tetsuya recognized one of the pursuers which was Torune so he immediately launched a lightning style: false darkness to intercept him and prevent him from approaching them.
Torune then collapsed on the ground but Tetsuya who was cautious still blasted him for good measure to see if he was playing dead.
The other root Ninjas were easily beaten by Yuzume and Karin so they headed towards Danzo who was currently fleeing.
As they were heading towards Danzo, Tetsuya summoned a small part of Katsuyu to stick onto all three of them, just in case.
Tetsuya asked Katsuyu to absorb nature chakra since he needed Sage mode to efficiently deal with Danzo.
While Tetsuya could probably kill Danzo without Sage mode, during sage mode, his senses were much sharper so he decided to use it since each time Danzo was revived by Izanagi, he could sneak attack Tetsuya.
…
They finally caught up to Danzo and Yuzume said
"Shimura Danzo, you will now be executed for the illegal human experiments you funded and the desecration of the corpses of the First Hokage and the Uchihas."
Danzo was really angry since they sent an Uchiha to capture him of all things.
Danzo then ordered the two Root ninjas beside him to stall them because he needed to unseal his right hand but Tetsuya immediately used the lightning chakra mode and rushed behind him to cut him in half.
Danzo was now dead on the ground but Karin immediately noticed that something was off. Danzo then appeared behind Yuzume and stabbed him with a kunai but thanks to his reflex speed, he barely avoided a fatal injury and retreated.
He used Shisui's eye to activate the Izanagi and was able to successfully unlock the seal on his right arm and revealed 10 sharingan on his right hand.
Tetsuya immediately asked Karin to run away. She immediately did as Tetsuya told since she knew that she couldn't participate in a battle of this level and that she would probably be used as a hostage.
Tetsuya then blinked next to Yuzume and asked
"You'll be fine, right?"
"Injury of this level is nothing to me"
"Be careful, the sharingans on his hands are used for Izanagi so don't let your guard down even if he dies"
Yuzume was surprised that Tetsuya knew about Izanagi since he himself didn't know about it until he became the clan head and finally saw some hidden scrolls explaining the technique.
Danzo then used the Wind Release: Vacuum Wave to get them but both of them dodged immediately since they knew beforehand the jutsu that Danzo could use.
Tetsuya immediately rushed towards Danzo again and cut him off in half but soon enough, he reappeared nearby.
Danzo then used the summoning jutsu to summon Baku and blowing the roof of the base.
Yuzume was surprised to see a big summoned beast but Tetsuya immediately used the raigo rasengan and blinked near the head of Baku, instantly killing it without giving it time to do anything.
As the battle went on, Danzo was repeatedly killed without being able to injure the both of them.
The last sharingan on his hand was finally closed.
Seeing that he was on his last leg and couldn't kill any of them, Danzo looked at Yuzume and started talking
"The mastermind behind the Uchiha genocide was Sarutobi Hiruzen."
Yuzume was stunned after hearing what Danzo said.
Tetsuya immediately knew that Danzo's objective was to sow discord between Yuzume and the village so he interjected by saying:
"Don't listen to him, the hokage wasn't the responsible for the genocide, it was Danzo himself that ordered Itachi to kill the Uchiha in exchange for Sasuke's safety"
Both Danzo and Yuzume were stunned hearing what Tetsuya said.
Danzo: "How do you know that?"
Tetsuya:"I knew from the very beginning. I was also the one who spread the rumors about you."
Danzo was furious after hearing what Tetsuya said while Yuzume was just standing there listlessly.
Danzo then tried to use the Reverse Four Symbols Sealing on Tetsuya as a revenge for forcing him to defect out Konoha.
Tetsuya saw through Danzo's plan and as he approached and activated the seal, Tetsuya blinked towards Yuzume to get him out of the way.
Danzo sealed himself and died while leaving a giant crater.
Tetsuya didn't let his guard down immediately but continued to scan around him in case this was just Danzo's trick to fool them.
Ten minutes soon passed and Karin soon came back towards them. Seeing her, Tetsuya let out a sigh of relief since Karin would only approach them if Danzo's chakra signature completely disappeared.
As they settled down, Yuzume finally asked Tetsuya what he knew about the Uchiha genocide.