This sound was mind numbing and chilling for many, but was also a signal for some. Suddenly white feathers started raining on the audience. Everyone soon was forced into sleep by Kabuto's genjutsu, the Temple of Nirvana technique. Dix only allowed this because it was way easier to fight while the civvies were out of the picture. Every ninja, and some skilled genins too quickly dispelled the jutsu and assumed battle formation. At the same time the action started at the Hokage's seat too.
While the chuunins and jonins, and even the ANBU was fighting in the elevated auditorium, the 'Kazekage' revealed himself to be Orochimaru, and his escort was the Sound Four. They killed the only jonin defending Hiruzen quite quickly, then when Orochimaru moved the Third to the roof, they erected a huge barrier around them so no one can butt into the fight.
Dix and Shikamaru already returned to the others, where Kakashi and Guy have already showed up before. When the invasion began everyone started fighting... but they didn't have much work to do. Dix summoned a few hundred clones and deployed them at various places around the village to counter whatever the enemy can throw at the village.
Even though at first it looked like a single target assassination, actually somehow the Konoha ANBU got retarded and they let hundreds of Sound and Sand ninjas infiltrate the Land of Fire and approach the village without detecting any of it. When the smoke bombs blew up where the Hokage was seated, the enemy began the siege with a few huge summoned animals and all their troops they could muster.
Gaara was supposed to be their trump-card, to become a huge raging monster and destroy most of the village, but he was in a bad state. Back at the fight with Sasuke he wanted to transform way before he was supposed to, but his opponent managed to critically injure him, which interrupted the transformation. His siblings were told to escort him away and tend to his wounds, both physical and mental, then follow the plan from before. Dix let them go, because if he somehow messed up and Shukaku, the One Tailed Beast were to get released, then he needed that to happen outside the heavily populated area. He will go after them later.
His first action after mobilizing was he wanted to catch Kabuto. He was a strong enemy, and a slippery one at that. He wanted to take him down, as he would be someone to continue Orochimaru's legacy, even if his master were to die that day. It was quite easy though. He already made sure to place a FTGT formula on him. He had nowhere to run or hide, he was already marked for death.
He actually wasn't too far, he was disguised as a Konoha ANBU unit. Dix wanted to test something he always wanted to try out, but never really had the chance, or he just sometimes forgot. Technically he had the ability to teleport anything to any other formula, as long as it was connected to either him or to his chakra. Following this line of though, if he were to whip up something, for example a Biju Bomb, which had the same destructive power as a smaller nuke, and teleport it at a formula that was around, or even better, on his target, he could potentially blow up anyone from anywhere at anytime. And he wanted to see this work.
Instead of a Biju Bomb, which he actually was able to make, because he trained it a lot back at HQ, he wanted something that would leave the village mostly intact. Thus he decided to use Naruto's signature jutsu, the Wind Release: Rasenshuriken. Dix quickly pulled together a rasengan, then infused it with wind element just as fast, then teleported it right into Kabuto. It was quite messy, at first he was cut cleanly in two, then the rasenshuriken started devouring his whole body as it expanded. Not even his blood remained that could be splattered all over the place, as all of what Kabuto once was suddenly got grinded into nothing.
Even though people were mostly preoccupied by their fight to the death, suddenly everyone turned to see what the heck happened with one of the leaders of the invasion. Kakashi could only shout out at the sight.
"You mastered the Flying Thunder God Technique! How..?! You are only 12! This is impossible!" He was utterly terrified. He knew what that technique is capable of, and he also knew that the most talented person that ever lived was only able to master it in his twenties! He had a hard time thinking straight and was having a small mental breakdown. He couldn't even begin to think what kind of monster he was the captain of.
Without answering Dix just looked back at him with a smile, chuckled a bit, then teleported away. He quickly made sure that Kabuto was dead, then moved on. Next stop is saving Hiruzen. Even though he was a stupid old man, he was still quite nice and helped him out, so if his death can be avoided, which was extremely easy for Dix, then he opted to help him out. He already had a formula on Hiruzen for quite a while, so he moved right into the middle of battle.
The fight between the Third and Orochimaru was already at the stage where the latter one was in the process of summoning the First and Second Hokage that he revived with Summoning: Impure World Reincarnation. This jutsu was able to pull any soul back from the Pure Land, the local afterlife, or 'Heaven', and make them take a sacrifice's body that will turn into the revived person.
Even though these revived people were way weaker than the original, they were still the First and Second Hokage. They packed quite a punch. Anyway, when Dix arrived to the scene both Hiruzen and Orochimaru jumped. Hiruzen first though he is being somehow attacked from a blind spot, so he moved to counterattack right away, which Dix easily evaded, then raised his hands.
"Hahaha, Uncle Hiruzen, don't worry, its me. I forgot to mention before but I mastered FTGT some time ago, so... Surprise? Never mind, I've come to help you. Let me take care of this." Even though Hiruzen was quite doubtful, he had no way to avoid Dix, so he grabbed him and teleported away with him, right after throwing a kunai towards Orochimaru. Next, a clone entered the same space, who was in Kurama Mode and was powering up a small Biju Bomb, or by its English name, Tailed Beast Bomb. The next second it was ready and he simply let go of it then teleported away.
Dix moved with the Hokage back to where he came from, to where Kakashi and Guy and many other Konoha ninjas, also many of his clones were. From there they could see as a few seconds later the Tailed Beast Bomb detonated and disintegrated the whole roof. The Sound Four, that was manning the barrier got quickly overwhelmed, and they disintegrated, together with the barrier. The explosion was mostly dissipated by the barrier before it vanished, but not completely, so Dix changed into Kurama Mode and shielded everyone around him with his Kurama Form.
Everyone was standing around stunned and was unable to speak or think. Dix didn't laze around like them though. He threw a kunai towards the destroyed rooftop, because the previous formula there was completely destroyed, together with most of the building. The Sound Four was dead for sure, but Orochimaru survived it, together with the summoned First and Second Hokages. Those guys were immortal because of the jutsu. Dix teleported once again with many of his clones, but left behind some for protection. He arrived to the kunai that was above his destination, so he threw the just collected kunai down into the ruins and teleported to it.
When he arrived he quickly opened his senses to feel where his enemies are. The two summons were easy to locate, because their bodies started regenerating so they tried to get rid of the rubble above them. Dix got them out of under the junk, and checked their condition out. It seemed like he managed to blow the place up before Orochimaru could put the personality suppressing seals into their heads.
"Hahaha, Lord Tobirama, it seems like your jutsus keep coming after you to bite you in the ass, aren't they?" he said laughingly. Many of the Second, Tobirama Senju's jutsus were used by either Konoha or others who managed to steal them for mass-destruction. He was the one to make Impure World Reincarnation too, which in the original story caused hundreds of thousands of casualties.
"Ehh... I made quite a few mistakes..." he answered shamefully. "But... who are you? WHEN and where are we?"
"Ah, I'm sorry, my name is Naruto Uzumaki, I am the son of the Fourth Hokage. He died though, so the current Hokage is still Hiruzen Sarutobi, but he is very old by now. You two were dead for many years, but only two generations passed since then. But lets stop with this conversation. You guys don't belong here, you should be dead. Lord Tobirama, you should know a way to undo your summoning and return to the Pure Land. Please do that, I'll have to eliminate the one who summoned you."
Without the seals to suppress their personalities and Orochimaru to actively control them, they were able to use a special method to severe their contract and leave the world at their own discretion.
"Yes, I certainly can do that, but how do you..." Tobirama began, but Dix already teleported away. He just released a sigh and turned to his brother. "Ahhh... Youngsters these days. Well, lets go back where we came from, shall we, Hashirama?"
"Hahaha, I don't really understand whats happening, but we shouldn't be here. Mhm, lets go back, brother."
///////////////////////////////////////////////////////////////////
You find the official discord for the novel here: https://discord.gg/XCEDp7H9tA
Thanks for the read, I'd appreciate if you were to leave your thoughts in the comments and donate some stones.
Cheers! :D