Hi! It's author-san/author-chan here! So- this is the details of the one-shot ig?

One-shot AU: Past soulmates

Times: 1500s, 2014? (I think 2014 is when Haikyu!! was realised)

We'll Meet Again

EDITED BC I'M A DUMB PERSON AND I GOT HISASHI'S NAME SEVERAL TIMES.

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(1526)

It was the time where cherry blossoms or sakura trees start to get their pino leaves. You and Kinoshita loved this time of the month.

Sadly, you both were arranged a marriage you both didn't want to at that time. You both wanted to get married to each other.. Since you were somehow the emperor's son and born in a royal family and Chikara being a swordsman, you both can't get married because of your family's rules. They also did not like any type of same gender relationship but friendship.

"BUT MOTHER, I DON'T WANT TO GET MARRIED TO THAT- THAT- WOMAN?!"

"YOU HAVE NO CHOICE (M/N) (L/N)! YOU HAVE TO DO THIS FOR THE FAMILY. You can't- YOU CAN'T GET MARRIED TO THAT SWORDSMAN"

"I DON'T CARE! I LOVE HISASHI, NOT HER"

"SHUT IT. It has already been settled"

"What? You- YOU CAN'T DO THIS"

"I CAN BECAUSE I AM YOUR MOTHER"

"WELL, I WISH YOU AREN'T"
you storm out of the old styled Japanese palace furiously, turning your back away from you mother.

You got to the stables and got a saddle and got a horse and ran away from home.

"(M/N)! GET BACK HERE"
She was too late. You already left on the way to Chikara, your only lover.

You got to the seaside to where you and Chikara hang out. Expecting to see him there. And you did end up seeing him their.

"Hisashi! My dear, where are you?!"
"(M/n)? I thought you were gonna marry Mai..?"
"Hell no am I gonna marry that woman! I ran away from my own home anyways. My brother can take my place since he's in love with a woman"
"Oh.. Okay.."
"You should stop crying, you'll get wrinkles love."
"Oh shut up.." He says in a joking manner

"(M/n)?"
"Hmm?"
"If we are re-born into another life. Do you promise not to add any conflict to our relationship and..love me and marry me?"
"..of course..I'll remember this promise for when we do reborn..I promise to love you in the future.."
"I love you.."
"I love you too, Hisashi"

____________________________________________________________________________

(2014)

It was another day in highschool, and as a second year, to you, everything is just shit. though, you are enjoying your life. Your mother even supports you for being bisexual, she doesn't mind at all.

Though, there is something that is stuck in your mind. Words that you've never recall saying

"I promise to love you in the future and marry you.. I love you.."

You've never made a promise in your life like that. Not that you remember. Though, your mother says that it's promise that you've made in your past life. You don't know why she believes in that

"Mom! I'm going!"
"Okay! Be careful on your way to school!"
"Mhm!" You respond with a mouth full of bread, you didn't get to eat breakfast since you woke up late.

The bell rings and you were the last person to get to the classroom

"Sorry I'm late Mrs. Mai!"
"It's okay (M/n), go on and take a seat"
"Mhm.."

You sat beside Ryu, he was your best friend. Somehow, his last name seems so familiar even though you've never met someone who has "Tanaka" as a last name but him.

"Bro.."
"Yeah?" You both whisper, telling each other the answers to the little quiz the class has

"(L/n), Tanaka. Please stay silent, you can both talk to each other after class"
"Yes Mrs. Mai"

After class you both went to the cafeteria to eat the most delicious meal that the cook has made for that day

"Dude, do you want to go to my practice later?"
"Oh right, you're a volleyball player! Yeah! Sure, I'll go!"
"Okay! It's after lunch"
"Okay! I'm finishing this whole bowl of rice- wait a min' "
"Okay"

After lunch, you both went to his practice. This is actually the first time you went to his practice. You've never even met his teammates. The only people you know is Kiyoko, Daichi, Asahi, and Sugawara. The third years

"Hello everybodyyy. Sorry I'm lllate!"
"It's alright Tanaka. Oh! Hi (M/n)!"
"Hi Daichi-senpai!"
"Just call me Daichi, it's weird"
"Okay!"

You look to the other side of the gym and you see eight more members of the team. The four seemed like first years and the other four second year. But one particular person caught your attention. Then memories that you didn't make came to your mind. Or you think you didn't make

"If we are reborn in another life. Do you promise to not add any conflict to our relationship and..love me and marry me?"
"..Of course..I'll remember this promise for when we are reborn..I promise to love and marry you in the future"
"I love you.."
"I love you too.."

"..."
"(M/n)?! Hey! Earth to (M/n)! Bro, are you okay?"
"Uh- I..I don't know. I just suddenly got these random memories.."
"Uh okay- like I said, these are the second years, Ennoshita, Narita, and Kinoshita"

I suddenly look at one of them.. Kinoshita was it?..that sounds like..the name of the man in my memories, he looks like him too!

"Uhm.."
"Uh.. Did I suddenly get random flashbacks or?"
"You had flashbacks too?!"
"What do you mean too?- ...wait..I think I saw you before- WAIT"

Hisashi took out his phone and searched up a name. He then showed a picture of two people, they were from the Sengoku Period. one of them was the Emperor's son and a swordsman.

"Why do the hell do they look like us?"
"I don't know.. Their bones and in a museum now too! Look!"

(Don't come after me, I just found this off of google ಥ⌣ಥ)

"They have preserved bones!"

"...past-"
"Soulmates..?"

You ran home yo your mother to break the news that you've found your soulmate. She was on the couch when you barged into the house

"MOM, MOM, MOM!"
"WHAT?"
You were breathing heavily when you got home, trying to find the words to say to your mother

"I found my soulmate!"
"What?? Really?! Who is it?"
"It's a guy from my school! He's the same year as me! We also found this out..do you know anything about the Sengoku Period?"
"Yes, of course I do, I got an A+ in my history class..or something"
"Okay- anyways, do you know these two?"
"Yeah, that's prince..(M/n) (L/n).. And his swordsman lover..Hisashi Kino..shita?"

"Yes! They have preserved bones in a museum!"
"So, you're telling me you're actually reborn from this prince to- YOU?!"
"YES!"
"OH MY- HONEY I'M SO HAPPY FOR YOU!"
"THANK YOU MOM!"

To make long stories short. After a week, you and Chikara started dating, and then decided to mary each other in the near future. Like the promise your past self wanted you to do.