Arthur's Note:

This story will not be written in a linear fashion. Thus jumping around the timeline is to be expected

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"Young Midoriya, Like me, you lacked the skills necessary to use ninjutsu, genjutsu, and even taijustu properly as well. Making so that normally neither one of us would ever be able to become ninjas as a result of this. However, the previous seven users of this justu before me have mastered the previous six and I seemed to just natural at using the seventh. However, despite that, no one has been able to truly master the eight, not even me. I managed to live through my usage of it but it cost me dearly as you know" All Might said

As Izuku Midoriya was listening to him talk about the Eighth and final gate of the Eight Gate Justu. A justu that allowed one to use the Eight Gates at will though training and mastery would take time. Though it was also capable of being passed on and the effort from the previous user would be added to the overall power as well making it easier to use higher gate with less backlash. All Might being the eighth user of this unique justu that he had been given by his own master and proved to be natural that seem to be using everything it had at one hundred percent from almost the moment he got it. Izuku was not sure if All Might could master the eight gate as well. Would not all he really needed was the actual experience in combat to fully master the Eight Gate Justu. If the event that cause to need to pass on this justu never happened. Would he have been able to master it as well given enough time?

Izuku as the ninth user had nothing problems really until he found his own unique way of using the Gates to lower the backlash he felt every time he did so. Even then it was a tightrope walk he did every time as he had to use his Full Cowling ability in just the right amount that it did not cause so much backlash that he would need help not just to complete the mission but even continue moving afterward.

Looking at the foe before him as he was tasked with recovering a young girl that had been under his current foe. Someone that took out both experienced Jonin and Chunnin that was could be considered on par with base level Jonin at least in terms of skills and abilities. However, it was during this fight and recovering the girl that Izuku learned what her unique justu was as it was not something horrible that needed to control for the damage it could do to others. That was only the case when looking at when used incorrectly.

"Eri" Izuku said to the girl that had promised himself that he would indeed save after having already let her go once before.

"Your justu is not a curse or a burden. It's a gift that can be used to help countless people but it is being used for the opposite instead. So to help prevent that from continuing to happen I want your support as whatever keeping it activate focus on that for now, okay" Izuku said.

Eri nodded as tighten her grip on Izuku while he tighten the cape that he was used to stripping her to his back.

'I do not know the detail but her justu rewinds things to their previous state thus even if the person is already healthy. It keeps going until they no longer exist as a result of her not knowing how to stop. However, that should not be a problem if it has to keep working just to get a person back to a normal healthy state' Izuku thought

"Eight Gates Full Cowling One Hundred Percent," Izuku said as the full power of the final gate was unleashed.

His hair stood straight up and around him was a flame aura that covered his entire body though was not affecting Eri though.

Not knowing how long he could keep this up and not wanting to risk further damage to the surrounding area any more than they already had.

Izuku launched his foe into the air where they resume their fight in the sky far away from anyone able to get in their way. Though this also worked to Izuku's advantage as well as up in the sky like this there was nothing his foe could use to attack him with using his own unique justu anymore.

It did not seem to work on the air itself however they were still the hulking monster that they turned themselves into but that did not help them in the sky like this.

The speed Izuku gain from using Eight Gate Full Cowling at one hundred percent allows him to avoid everything and blow him away with a punch so hard that sends him flying back down to the ground well beyond the speed of sound itself.

During the fight, Eri's rewind just was working overtime to undo the damage that Izuku was doing to himself. Resulting in it overloading cause she can not tone it down only allow it to keep reeving up instead.

Though both were saved in the end by their Jonin instructor, Eraserhead used his justu on them to have them both cut off right in time. Leaving both Izuku and Eri to collapse to the ground after having finally won the battle and the war as well since Izuku's fight was the last one yet to be finished.

With that at least for now, the mission that they were tasked with was completed with the aftermath and clean-up now on the minds of everyone that could still move.