Previously,
Izuna said, "I am sorry to interrupt you but this battle must continue."
Now,
Izuna started with a flurry of hand signs.
Naruto and Mito followed it. Izuna rarely needed any hand signs. If he was making this many, it was gigantic in a scale where Level Five Susanoõ was microscopic.
Mito shivered, "How do we stop that?"
Naruto answered, "Together"
They readied themselves for whatever Izuna was preparing.
Izuna finished all of them and said, "Konoha forbidden jutsu:"
He then appeared squatting behind Naruto instantaneously and said, "One BILLION years of Pain!" and poked Naruto who was sent flying screaming in pain.
Mito twitched and asked, "You mean, ' Glorified Ass Poke' ?"
Izuna chuckled and said, "Yeah... Something among those lines."
Mito jumped backwards and said, "Shall we continue?"
Izuna smiled and said, "Let's. Good thing Naruto is not here. Now I can assess the two of you separately."
Mito willed her Susanoõ into existence. She charged at Izuna. Izuna put up his hand and uttered, "Amaterasu!" A large flame blue black in color. They nearly engulfed Mito herself. She leapt up in the air letting go of her Susanoõ. She was coming down hard on Izuna. She screamed, "Earth Crushing Punch!"
Izuna caught her punch with one hand, not even flinching at the huge account of force behind that punch. He pulled her by the arm and put her down. She passed her arm that was caught by Izuna through him and flipped back up. Izuna took out a kunai and charged it using chidori.
Mito imitated Izuna and flared her own chidori into existence. She charged Izuna again. Izuna saw that she wasn't as fast as she was just a second ago. She was playing at something. Izuna took an offensive stance. As Mito was nearing him, he started a jab towards Mito. Mito was expecting this. Her mangekyou was spinning wildly. Izuna was not dumb. He stopped his attack and synchronized his kamui with hers. Now, she couldn't escape him. Mito's chidori clashed with Izuna's. The two of them backed off. Just as this happened, Naruto arrived.
Mito asked him, "Whatever happened to stopping his first attack together?"
Naruto twitched. He declared in anger, "I am going too best you down for that old man."
Izuna smiled and said, "Good luck. But, I won't fall for your tricks again."
Naruto said, "I never showed you any of my tricks. You must be going old old if you thought what I did in your kamui was a trick. That was just farming. Now you shall actually get to see my tricks."
Izuna was not sure whether or not that was a bluff. When he saw Naruto unearth his blade, he knew Naruto was not bluffing. He transported them all to a different dimension which was the same as their own only without any human life.
Naruto used amenotejikara to go above Izuna. He then dropped more than a few bijuu damma variants or ultimate rasengan variants in his eyes. They all blasted off. He told Mito, "Piece of Cake!" She said, "You did a perfect job if your plan was to piss him off!" Naruto scorned, "No need to be mean about it.."
The huge blast of the various rasengan variants all suddenly disappeared. Izuna didn't take the blast. He just absorbed it and put it all into one giant culmination of chakra and compressed it to the size of an average rasengan. He shot it towards Naruto. Naruto was sent flying backwards. He got far more than he bargained for. While Izuna was fighting Naruto, Mito shot a good amount if water in his eyes. He was distracted for a moment and that was what she needed. She used kamui to get from get location to behind Izuna and cut his knee. She was about to punch him in the face but she was blocked off by Izuna and was sent backwards. Naruto teleported right behind Izuna and tried to strike him with his sword. Izuna dodged the first few and then caught it with just one hand. He snatched the sword from Naruto and kicked him backwards. Naruto used the seal nodding him to his sword to summon it back to him.
Mito jumped on him and placed a raiton excision seal in his back and she jumped in front of him and said, "Boom" as she went off through kamui. The seal on Izuna's back exploded with Izuna getting a lot of electricity running through his body. Naruto used this moment of distraction to place a paralysis seal on him. Unfortunately, it only worked on the part of his body that had been struck with raiton. He then attacked Izuna by advising his powers of kamui and amenotejikara. After about five hits, Izuna caught Naruto and put him down on the ground. He then threw Naruto away. Naruto got up and shot out many many A and S rank jutsu and kinjutsu as though they were nothing. Yet again, Izuna just absorbed them all in a matter of milliseconds and shot it with more force at Naruto by combining all of them. Naruto was thrown a long distance away. Naruto then used amenotejikara again and appeared nearby Izuna and caught Izuna's arm by using Mokuton. His paralysis seal had stopped working long ago. Izuna pulled Naruto using the sane Mokiton bars that Naruto was using to hold Izuna and Izuna thrashed Naruto.
Suddenly a huge earth Dragon slammed into Izuna. Mito stood right in front of him. She was carrying a chidori enhanced short sword in her hand. She hit Izuna a few times with it before she to was thrown backwards. Naruto then combined his mokuton and amaterasu to form bars to hold Izuna. Mito kicked Izuna's knee when Naruto's jutsu took hold. She then shot another raiton seal at his elbow which exploded big. Naruto then went and kicked Izuna in the gut. The two of them made a few snacks clones as Naruto tried carrying a genjutsu on Izuna while Mito sealed away Izuna's freedom of movement for a while. Naruto was able to capture Izuna in a genjutsu. Naruto put him in a genjutsu wherein Izuna saw the worst of his fears came true. Izuna only saw one thing, his son doing at his hand just because he had been to reckless. Naruto felt guilt st doing what he was doing.
Just as Mito was about to complete her job, Naruto's genjutsu broke. Izuna destroyed the seal instantly. He threw Naruto and Mito away. He blasted their clones to smithereens. Naruto jumped back at Izuna who punched him backwards. Naruto summoned his blade and tried to attack Izuna with him. Izuna caught Naruto and hit Naruto in the head.
Mito saw Izuna do handsigns again. She understood what's coming almost instantly as she backed off. Izuna said, "Let's see how you deal with this: SENPO: JIGOKU NO HI NO DANNO!(SAGE ART: HELL FIRE DRAGON)"