Your Love~||Mitsuri X F! Reader X Muzan

Starry night~

A/n: just a reminder this chap is ur past life
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Sister. Kagaya said to you softly
Yes Brother? You ask  "Why waste your life protecting me? I'm very capable of protecting myself. Onii channn- I've told you many times! You are all I have so I must stay by your side and give you my undying loyalty as your Sister and Friend! You said cheerfully with determination in your eyes. Kagaya smiled How interesting. I should be the one protecting you yet our roles are reversed. He then patted your head. There were many moments were your brother questioned your life choices but all he was truly worried about was you he would hate to have you die feeling alone but being alone was the best option for you.
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You were on your way to go to a solo mission as always you planned on leaving before your brother woke up before he could convince you to stay or take someone with you. But sadly he was on your porch waiting for you. Sister- Please be very careful. don't worry~ I'll be fine you say placing your hand on his shoulder reassuringly. I love you Y/n he then pulled you close and hugged you tight and you hugged him back I love you too Kags! .You picked up your sword and bag filled with extra clothes and food and walked away. You turned around and noticed your brother watching you walk away. It hurt so badly that you had to leave him but you knew he would be fine and you'd be back in 3 days no more no less
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[Later]
As you were walking through the city in hope to find the demon you had to slay. then suddenly you smelled a demon a strong sent coming from an allyway. unhesitant you ran straight to the alleyway and saw a demon consuming a woman he had blonde ish hair with red on the top and he had rainbow eyes. oh my~ quite a beauty you are!  You. Narrowed your eyes on him
Oh don't look at me like that~
[ not me getting  Hisoka vibes😳]
What's your name pretty girl?
My Name is Y/n Ubuyashiki! And that will be the last name you EVER HEAR! You pulled out your sword prepared to fight. Oh I get it you want to play the demon said happily clapping his hands What a shame I wanted to save you for later boo hoo he said Dramatically. you threw your sword in the air and quickly said Sakura breathing 1st form Sweet Pain and with that your eyes turned black and your pupil turned pink and took the shape of a sukura flower and Sakura Flower type markings appeared all over your arms and one one on your cheek and as soon as your transformation was done your sword fell onto your right hand perfectly timed. Oh my what a Show! Ya know I think I've heard of you your that Uum- Sakura HashiRA that my master is fond of. Blah blah blah you say I'll Get rid of you and your master Beautifully you say with a smirk. oUh I know~ if I give you to Master I Could get a Raise! I could care less about your raise you say tilting your head to the side. NOW COME ON FIGHT ME! Sadly I can't- if master even sees a mark on you id be Dead and you don't wanna be the cause of my death do ya?
Yes I do actually- that's why I'm here... AH HOW CRUEL! He said Dramatically he then walked towards you and fear filled your body you were scared all your bravery dropped the second he started walking twords you. You couldn't move or talk.Whats wrong Y/n cat got your tounge tehe~ sweat dropped from your face and you dropped your sword dogma finally got close to you and he whisperd in your ear Goodnight Beautiful~ he then chopped your neck and everything went black.
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[2 months later]
It had been 2 months since you left the Hashira base you missed your brother so but you knew he would be okay without you.

You had been staying in a place with Muzan and the 12 kizuki. It was not so bad there and you found a friend inside douma the one that brought you here in the first place. Although he annoys you with his flirting and constantly telling you how he can't wait to eat you. Also you had caught feelings for Muzan
Yes it was wrong but he was so kind and polite to you. It was hard to believe he was the demon king.
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2 more months later

Muzan: have you decided if you want to be a demon or not yet

Y/n: I have nothing to gain from it-

Muzan pulled you closer. But you also have nothing to lose either you will gain the title as my wife instead of you staying my lover. And you'll be Even more powerful.

Y/n: Do you promise?

Muzan: I promise

Y/n: Then yes I'll become a demon!

He kissed you and pulled you close.
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[3 years later]
   
You had been living a life as an demon princess the title princess appealed to you more then queen so you called yourself pincess although you were a queen you and Muzan had been married for 3 years and Had 1 child together but he was born a human. You were not allowed to see your brother knor write letters for all you knew he was dead and for all he knew and the rest of the Hashira knew you were dead. At least you never sold the Hashira out a part of your corrupted heart was still an Hashira.
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[Dead of winter]

You and muzan  were walking around the forest at night planning on getting information on where the blue spider Lilly may be but then a Hashira appeard. And he was no other then Kagaya Ubuyashiki.

Sister- What have you done
You gave him no verbal  response but your face showed your emotions. Kagaya I- you said but we're cut off as Muzan ran straight twords your brother prepaired to end his life at that moment. You quickly jumped in front of Muzan to protect your brother splitting you in half. Your brother was badly blinded and with what little life you Had you watched as he lost his vison. Muzan stared at you as he watched you die I'll find you again I swear. And you won't ever escape me again you heard Muzans cold voice said you watched him fade away into the shadows. You saw your brother grab your hand SISTER he screamed but you were to weak to respond. Then it all went black

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This is probably the longest chapter I will ever do for this story~

I did not get to do some details since this. Chap has over 1000 words.

I hope you enjoyed 

Un edited chapter please don't judge !