Yuki was sitting there with Y/n, Luffy, Sabo, Kiyo, Tojo and Hisu

Yuki: I will start to tell you about the place that we once lived in and how it has changed..

Y/n: What was the island like?

Yuki sighs before answering the question

Yuki: Beautiful. Very populated and was just so serene..but let me tell about what happened.

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At a island near Wano. Years ago

???: Look at you two!! Growing so much! I am so delighted to see my little ones growing up!

The person says that to two 5 year olds

Yuki: Thank you mother.

Kiyonako: Oh stop mom! It's as if you are trying to embarrass us!

The Mother laughs

Hisu: Why would I ever ever want to embarass my two babies!

Hisu beckons them to come and give her a hug as they both smile, rum over and do so as they sit in her lap.

Kiyo: If I may add princess Hisu-Sama..where is your other child?

Hisu: Oh! You mean my baby boy? He is safe with Inatsuki there is no way he will be here-

Suddenly they hear a cry as they see a baby crawling towards them.

King: Ive got it daughter don't worry.

The king goes up to pick up the Baby as he looks it in the eyes

King: This baby looks a bit like you Daughter. And it even has Inatsuki's looks which means...

Hisu gasps

Hisu: Y/n!? Why is Y/n here! I thought he was with Inatsuki!!

Tojo: Should we bring him back to Inatsuki your majesty?

Hisu: Oh its fine don't worry! At least these three might be able to live together. As a family.

The king brings Y/n to Hisu, Yuki and Kiyonako as Y/n starts to touch up Kiyonako's face

Kiyonako: Our little brother is so cute!

Yuki: I know right. Cuteness overload!

Hisu: You are all my little cuties

As they all embrace eachother in a hug

Couple of years Later

Yuki and Kiyonako are 14 as Y/n is 8. Yuki and Kiyonako are seen as the strongest in the whole is the island and are seen as possible prospects while Y/n struggles to get out of the shadows of his older siblings.

Y/n: Where are we going mother!

Y/n walking now as he starts to look around at the surroundings of the island.

Yuki: Don't get lost Y/n.

Kiyonako: *laughs* He has a habit of doing that

Y/n: Be quiet Kio!

Hisu: No need for fighting guys! And to answer your question dear, we are going to go and see a statue.

Yuki: What kind of statue Mother!

Hisu: A statue of Goto the Great.

They make it to some massive room as there is a statue standing there.

Y/n: So this is Goto huh?

Hisu: Yep! He was a legendary warrior who stood beside Joyboy in battle. Apparently he gets reincarnated every 600 years into a Oni.

Kiyonako: Really?

Hisu: Yep! So one of you could be the reincarnated version of Goto.

Yuki: How would you know if you are the reincarnation of Goto?

Hisu: If you touch that statue right there and there are thunderclouds and there is a storm then you are his reincarnation. Many have touched it but none have been the reincarnation.

Kiyonako: Its going to most likely be me!

Yuki: No its not elder brother. Its going to be me

Hisu: Maybe....maybe. Anyway let us start to go now.

Hisu, Yuki and Kiyonako start to walk off as Y/n walks closer and closer to the statue.

Y/n: Reincarnation huh? That's funny

Y/n playfully starts to touch the Statue.

Hisu: Its time to go dear!!

Y/n: Oh Sorry mother!

Y/n stops touching the statue as he runs over to his mother as he holds her hand.

A couple of minutes, there is just a thunderclouds and storm as everyone runs to safety.

Kiyonako: Why all of a sudden are there Thunderclouds and storm?

Yuki: No clue. Might be the gods angry at us.

Y/n: Or....it could be Goto's reincarnation?

There is just silence as Kiyonako and Yuki start to laugh

Kiyonako: You are not the reincarnation Y/n!

Yuki: There is no way that you are!

Y/n pouts as he crosses his arms and sits down.

Time skip

Yuki: So you are really going to go?

Y/n: You really going to leave big Brother?

Kiyonako: Yeah. I've always wanted to travel this place and see more.

Kiyonako looks around

Kiyonako: Where is Mother and Grandpa?

Y/n: They are preparing the coup! Did you not know?

Kiyonako: Oh yeah....that.

Yuki: Anyway! You have a safe journey out there

Kiyonako: Thanks guys! Bye!!

Kiyonako jumps off the island as he deploys his squid balloon as he floats all the way to a nearby island.

Kiyonako: Okay! So where should I start to go. First off I need food.

He walks towards a bar as he enters to see someone eating a lot of food

???: This is disgusting! Can I have more though!!

The person continues to eat as Kiyonako approaches him.

Kiyonako: Excuse me do you know where I am?

Blackbeard: Do you not know where you are? Zehahaha! You are a intresting one! What's your name?

Kiyonako: Kiyonako. What's yours

Blackbeard: Blackbeard! Say! Do you want to join my crew and my plan?

Kiyonako: What plan?

Blackbeard starts to explain his plan about killing Thatch and taking the devil fruit .

Kiyonako smiles a evil smile

Kiyonako: Sure. But I need to do something first and I need your help for it..

Blackbeard: Sure. What do you want?

Timeskip

It was a dark day. It was night time and everyone was sleeping but they didn't know what was going to happen on that night.

Blackbeard: Zehahaha!! Let's us get this over with!

Blackbeard looks up to Kiyonako

Kiyonako: Yeah. Now lets do this thing.

Kiyonako becomes crows as he teleports away to houses

Oni 1: Huh? K...Kiyonako? What are you doing-

Kiyonako slices the Oni as he kills him.

Oni 2: HUUUUH!!?

Kiyonako then goes on a kill steak as he just goes around slicing everyone. His sword bloody.

He continues his assault until he makes his way to the throne room.

King: If you have to do it...then do it.

Kiyonako starts to cry

Kiyonako: I'm sorry Mother....grandpa....but I have to!

Hisu: I hope you have a good reason for it....son...

Tears fall down Hisu's face as she gets sliced up.

Kiyonako looks around at the damage that he has done

Y/n: Older Brother!!

Y/n runs towards Kiyonako as Blackbeard looks at him

Blackbeard: Older brother?

Y/n: Why are you doing this!! Why are you killing everyone!!

Kiyonako: It had to be done....for the greater good..

Y/n: Thats impossible!! How is killing people for the greater good!!

Kiyonako looks at Y/n

Kiyonako: I'm sorry...I'm so so so sorry!!

Y/n: You killed our whole clan....you....you...!!

Y/n's eyes turn a different colour

Y/n: WHYYYY!!!??

His hands shoot towards Kiyonako as volts of black lightning hit him as he is very injured.

Kiyonako: Black Box!!

Kiyonako uses his Oni abilities to put Y/n in a black box

Kiyonako: I guess you really are Goto's reincarnation.....but I will make you forget everything..

Kiyonako: You never saw what happened here...do you understand?

Y/n slowly nods

Kiyonako: Good.

Kiyonako removes the box as he kicks Y/n off of the island

Kiyonako: Goodbye....younger brother.

Y/n falls down from the skies into a tree.

A person starts to walk by.

???: HUUUUH!!?

Hitesu: How on earth did Y/n-dono get here? I must bring him back to the house.

Kiyonako: Let us go Blackbeard. And execute your plan now

Blackbeard: Zehahaha!! Now you are talking!

---------------------------------------------------------

Yuki: And that's the end of the story...

Yuki looks to Y/n as he clenches his fists.

Y/n: I have a new goal now.....to beat the Yonko's ass, revive the Oni clan and to kill Kiyonako.

Yuki gasps

Yuki: This was said in the prophecy!!

Yuki takes out a book as she flicks through it

Yuki: The book says two brothers will fight in the end of the final battle to settle it once and for all...

Y/n: Just you wait....brother....

(A/n): Thanks for reading!