Namikaze Minato stood in front of the Konoha forces that were usually manning the hideouts in the Land of Grass. He was observing the large force of approximately a thousand experienced Iwa ninjas that gathered at the moment's notice.
Destroying Kannabi Bridge certainly broke the stalemate and Konoha even started to push Iwa back but nobody predicted the Third Tsuchikage would do something so rash as pulling a thousand high-ranking ninjas and attack Kusa outpost with the full might of Iwa. By doing so, the old midget has basically forsaken the war against Kumo and Suna, focusing fully on Konoha.
It was clear to every single ninja on the battlefield that this might very well be the battle that would decide the outcome of the war. What was Minato's problem, then? It was that Iwa had a fresh thousand high-ranking jonin and chunin gathered on the opposite side of the field while Konoha had barely five hundred, made of chunin and a few occasional jonin that were weary from long fighting in small skirmishes all over the Land of Grass. Their sole back-up was the two hundred genins that were usually used for bringing supplies. The odds simply didn't favor Konoha right now and Minato was very disgruntled by the situation.
Minato also wasn't feeling most charitable towards the Iwa ninjas right about now. Obito died, Kakashi lost and gained a new eye, Rin was mentally at her lowest... and it was all caused by Iwa ninjas. Needless to say, cold fury was gripping Minato's heart. He spent hours upon hours every day training these three and came to like them as if they were his siblings and now they were on the verge of breaking apart. His heart wanted some payback.
'I will have to use THAT, won't I?' He mentally lamented, remembering his promise to Kushina that he would try to avoid using it as much as possible due to the target it would paint on his back. 'Beggars can't be choosers, I guess.' Minato hummed and the decision was already made for him. He would, however, never admit that he actually wanted to use it and since Iwa ninjas willingly volunteered...
Before the battle, they had a bit of time to decide on a plan. Minato was one of the very few elite jonins available so he was naturally in the leadership position despite such a thing being unthinkable under normal circumstances. Normally, it would be a clan ninja in charge or someone older in the case of a civilian-born. Alas, Minato became the victim of circumstances and gained this opportunity. He was just elated that he always carried thousands of his special kunais... just in case. Minato quickly ordered every ninja to carry two of his kunais and throw them when signaled to, which was now.
Minato raised his right hand and a volley of kunais flew high into the sky, showering the ground a hundred feet in front of the charging Iwa ninjas who just funnily watched at the Konoha idiots who couldn't even aim properly.
The Iwa ninjas were quite amused at their enemies wasting kunais and throwing them without anyone even being in the range. If they just took a second and thought about the situation, they would naturally stop or try to go around the field of 'harmless' kunais, maybe even realize whose these special kunai were but the Iwa ninjas were too drunk on the vision of success to give it a thought. They just stubbornly charged ahead.
...
"Is Konoha really so stupid to waste kunais like that?" Mei asked, tugging on Rei's sleeve who chuckled at her naivety as the two of them watched the beginning of the battle from a nearby hill. Nobody else was interested in it, to be honest.
"No..." He started but stopped talking when Minato started charging alone into the Iwa army. "Just watch." In the end, he said, letting Mei make her own assumptions after witnessing the battle.
Honestly, Rei didn't know what he was expecting. This was supposed to be the event that made the Fourth Hokage a living legend and cemented his position as Hokage candidate despite him being a non-clan shinobi in a village where most of the council is made of clan heads.
Did he expect to see a yellow flash and all Iwa ninjas fall as if their strings were cut? A total, as if magical annihilation in under a second? Maybe he did before he knew how chakra works and studied Jutsu and Seals deeper. Maybe he did before he reincarnated. After all, that would be certainly cool, no? But it was impossible. Being able to kill a thousand people with a transportation seal in under a second would tear the user's body apart.
That was naturally not what he witnessed...
What followed was three hours of blood, gore, and screams as Minato Namikaze fought the force of thousand ninjas alone, without the aid of the Konoha ninjas who just stood out of range, gawking at him and occasionally throwing kunai or two to any poor Iwa-nin who got into their throwing range. So much for the Will of Fire...
Minato flashed left and right all around the battlefield, reaping lives and creating chaos in the ranks of his enemies. He used their numbers against them, sowing more and more fear and uncertainty with his sudden appearance and disappearance. One second he was in the left-wing of the Iwa army, the next second he could very well be in the right-wing, in the middle, or anywhere else for that matter.
"They can't fight him at all." Mei commented. "He is too fast for them to even retaliate."
"Yup, the seal must take quite a lot of chakra to create but I guess it takes a very minimal chakra to actually use otherwise he would already be dead by now due to chakra exhaustion." Rei nodded, analyzing the seal by the way it worked and what he knew of it. "I must say I am a bit disappointed. I expected more. Even the Raikage could do this if he had an unlimited supply of chakra. The only two reasons why this is so deadly is that firstly, the enemy didn't expect it and don't know how to counter such tactics... they basically panic at this point and are getting slaughtered for it. And secondly, it takes little chakra to maintain such a pace."
"I don't think it would work against me." Mei proudly stated, narrowing her eyes at another flash of yellow in the distance. Rei was observing her too and he noticed she could somewhat follow the yellow lad's movements. This only made Rei even gladder for Mei's progress.
"Well, you do have an area of effect melting mist. The second he would face you, the poor sod would run as far as his seals could get him if he knew what is good for him." Rei chuckled and ruffled Mei's hair.
'Honestly, there are so many techniques that could counter this bullshit porting that it's not even funny. And yet, the Iwa idiots don't use them. By now, I can honestly say most of them deserve being slaughtered.' Rei shook his head and twirled one of Minato's kunais on his finger. He swiped it from the air with a chakra string when the Konoha ninjas threw them and quickly disabled the beacon seal so the kunai was as good as dead to Minato's senses.
"I wanna try to fight him." Mei said, startling Rei. "He has almost finished with the Iwa ninjas anyway. Soooo, can I? Pretty please?" She used a very effective Puppy-Eye no Jutsu on Rei who facepalmed and groaned but couldn't really say no to that cute expression. Minato was almost finished and the remaining Iwa ninjas were running away anyway. The young man didn't even seem all that winded to Rei. He only gasped for air on all four which translated to being able to keep going in shinobi jargon. Surely he could entertain Mei for a bit, right?
'Minato, you poor lad. I think you are about to get shafted...'