The Canon Starts, the 9th OFA User.

[Kaito POV]

It is time, the time when the story of this world begins, from this moment onwards all of my decisions can bring either good or negative changes to the world. To recap I have fully integrated every breathing technique except for Sun in my arsenal, although I have yet to perfect them.

(Ok hear me out, I decided to nerf Sun Breathing until he gets the mark because I believe it is too soon for him to have it, secondly, I decided to call it Sun Breathing but the final form will be known as Hinokami Kagura, ok? Good enjoy).

To be clear there were some missing forms out there so I had to create the missing ones and also adapt some others, for example: all of the moon breathing forms were made while using the blood demon art of Kokushibo so I had to find a way to adapt them to myself, and the same to the forms from 2-6 of the Thunder Breathing but I'll get there other day.

I decided to call the sachet that mom gave me Nezuko, because I'm always carrying it, he he. Around 2 years or so ago Mirio, Nejire and Tamaki entered UA so at least they were in the right track, as a matter-of-fact Mirio won the sports festival and even said on camera that he would have a rematch when I enter UA.

I almost reconsidered my high-school because of that, mostly because it was very embarrassing. Going back to Nezuko apparently the sachet has a lost n found option in which if I am 50 feet away from the sachet it will respawn near me, I don't know where but it will re-spawn as near as possible also, the sachet has a consciousness so in case someone tries to attack it the defense mechanism will be to enter the dimension and go out in a different place.

I have no idea how that works but hey quirks are quirks so I won't complain too much about it, I also discovered that I can enter the dimension but the only way to escape is through the whole of the sachet so yeah F If someone can block it.

In case of damage Nezuko regens itself and all the contents will remain intact, even if just a Mili metrical fiber remains it will regenerate so as a backup I keep a fiber in a wardrobe just in case.

Now that that's out of the way I'm right now stalking Izuku. Why? Well buffoons because today All Might is going to meet him and make him his successor so I have to be there to record such moment and make sure things don't change too much.

[Third Person POV]

Midoriya Izuku, a quirkless person, all his life has been full of sarcastic comments, Bullying and low self-esteem. He now has a friend to share his dream of becoming a hero but, deep down he doesn't have the confidence to actually do it.

Suddenly a slimy figure emerges from the sewers and captures Midoriya. The Sludge Villain envelops Midoriya's body and tries to take over it.

"Help me someone, someone…someone!" Midoriya called in his mind.

"It's all right now, young man. Why? Because I am here!" Said All Might.

The Sludge Villain tried to attack All Might but the hero was too fast for him.

"Texas Smash!" All Might throws a punch and creates a wind pressure that blow the villain away, subsequently saving Izuku from the villain.

A few feet away from the scene Kaito whistled "wow I knew it was powerful but never THAT powerful, I sure have a long way to go but for now let's enjoy the show" Kaito said while eating rice crackers.

A few seconds later Midoriya awakens.

"Oh, I'm glad you are ok," said All Might.

Midoriya went full fan mode and thanked him like a thousand times. After receiving his autograph, he wanted to ask something to All Might bet he was about to jump away, so Midoriya (like an idiot) hangs on to All Might's waist before he could jump taking Midoriya with him.

"Like two peas in a pod, one is clumsy the other idiotic and the bigger fool is me since I will do shit at the very least three times more reckless" Kaito said looking at them go.

"Well, I'll go near the incident and see if everything will go according to canon" Kaito said while walking.

After the whole story about what happened to All Might Midoriya sees a scene in where many citizens are near a valley, in the valley the Sludge Villain took Bakugo as hostage and was in the process of stealing his body.

As many heroes started to give up for not having a good matchup against Sludge Midoriya dashes to try and help his friend, however in this story Sludge has control over Bakugo's hands and tried to blast Midoriya with explosions.

"KACCHAN!" Yelled Midoriya trying to reach.

An explosion came from Bakugo's hands directed towards Midoriya, All Might wanted to activate his buff form but before he could do that, he saw something unbelievable, he saw a youngster with two katanas cutting away the explosions.

"Flame Breathing Sixth Form: Komura Saki!" Kaito yelled cutting the explosion with his swords.

Everyone was shocked at this turn of events, the villain tried to send another explosion but Kaito used the dull-side of his swords to redirect Bakugo's arms upwards causing minimum damage.

"Midoriya! Save Bakugo!" Kaito yelled.

Midoriya who was in awe went forward and tried to take Bakugo off from Sludge's grasp but failed, fortunately All Might dashed and defeated Sludge once again trapping him in soda bottles.

(A few minutes after the incident)

"Do you have any idea how dangerous that was!" Dead-arms yelled at both Midoriya and Kaito.

"Oh, my deepest apologies Mister hero, I almost gave a fuck about what you said" Kaito replied without giving a fuck.

"What did you say?" Dead-arms was pissed. "You do realize that illegal use of quirk is a serious offense, right?".

"So what, I don't have a quirk, here's my medical results" Kaito said taking a folded certificate from his wallet.

"How can a quirkless person cut an explosion in half?" Dead-arms asked.

"Training hard of course, not that you do any of that given your excuse of performance in this situation" Kaito burned him.

(If you are wondering why he is being so mean to Dead-arms its because he was one of the many heroes that acted all high and might about being a hero and then retired because of being trash talked and MC HATES HYPOCRISY despite being a little himself, but at least he is hypocrite to himself and not others).

"WHAT!"

"Dead-arms stop it" said Kamui Woods.

"RUN!" Kaito yelled and took Midoriya's and Bakugo's arms and escaped the scene.

In the suburban area three youngsters were running until one of them yells.

"THE FUCK ARE YOU DOING YOU SHITTY SWORDSMAN!" Bakugo yells.

"Saving you the next one or two hours of lectures and no deserved praise which you hate so your welcome" Kaito answered with a deadpan expression.

"Kaito-san you have become so strong right now whereas I…" Midoriya was interrupted.

"Shut Up! I did tell both of you to train your bodies in your free time so you better step up the pace and go forth" Kaito said. "Now I'm going home to prepare for UA Goodluck Greenette, Gunpowder 4 brains". Kaito said while running away.

"COME BACK HERE I WILL KILL YOU AND YOU DEKU I NEVER ASKED YOUR HELP AND YOU DIDN'T HELPED ME I WAS ALLRIGHT BY MYSELF, YOU ARE JUST A QUIRKLESS SCUM WHO BELIEVES IS BETTER THAN ME DO YOU WANT ME TO BE INDEBTED TO YOU DON'T UNDERESTIMATE ME YOU DAMN NERD!".

Bakugo went to 'kill' Kaito leaving Midoriya perplexed.

'It's just as Kacchan said. It's not like I accomplished or changed anything. But...I'm glad. Now, I can think of a realistic future—' Midoriya thought before being interrupted.

"I AM HERE!" said a rushing All Might

"GAAAAAH! A..All Might? Why are you here!? You were just surrounded by reporters until just now...!"

"HAHAHAHAHA! Getting away from them was a piece of cake! WHY!? Because I am ALL MIGH---(Spits blood out) KAAaaaAAAAAaAAAAA----!"

"AAAAAAAAAAHHHHHH!" yelled Midoriya.

"*COUGH* Young man, I come with thanks, a correction, and suggestion." Said All Might cleaning the blood from his mouth.

"Huh?"

"If you hadn't been there... If you hadn't told me about your life... I would've turned into a guy in a bodysuit who was all talk. Thank you." All Might genuinely thanked.

"That can't be! It was my fault in the first place...I got in the way of your work, and I said all those impertinent things even though I'm Quirkless..." Midoriya was cut off by All Might.

"That's right. It was because none other than the timid, Quirkless YOU at the scene that I was able to act..."

Midoriya's eyes widened.

"Top Heroes have stories about them from their school days. Most of their stories have one thing in common: Their bodies moved before they had a chance to think." Says All Might remembering Midoriya trying to save Bakugo.

Midoriya starts to tear up.

(Midoriya's Inner thoughts)

For some reason, I remembered my mother's words. "I'm sorry, Izuku! I'm sorry...I'm sorry!" said Midoriya Inko sobbing

Midoriya Tries to hold back tears.

"It was true for you too, wasn't it?" asked All Might to Midoriya seeing his expression.

In Midoriya's face tears roll down cheeks

"YES!"

(Inner thoughts)

That's not it, Mom. Back then, what I wanted to hear you say... The words I wanted to hear were...

"You...can become a HERO." All Might said.

Midoriya Starts Sobbing.

(Midoriya's Inner thoughts)

Dreams can become reality. By the way, I forgot to mention that this is my story of how I became the Greatest Hero...

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Near the scene after losing Bakugo Kaito was seeing the legendary moment and was almost crying, the difference between him and Midoriya was that Midoriya had nothing to back up his dream of being a hero, whereas Kaito has basically every power up in the Demon Slayer world (even though he had to train to perfect them), this thought made Kaito think of himself as a hypocrite but still he was quirkless so no problem at all contract-wise.

"It would seem that I can't let you surpass me Izuku, hope we can fight at the sports festival." Kaito said while walking away focusing in polishing himself for the UA exam.