Idyllic | Muichiro T. x F!Reader

Introduction

Y/N is Muichiro's tsuguko, they met on a mountain and Y/N was already a Demon Slayer at the time.
This is a female reader story!

When you first met:
You first saw him staring up at the sky, his lost dull eyes gazing at the clouds. You sat down next to him on the soft grass and stared up at the clouds with him. Your last mission was pretty stressful and you were exhausted. "What's so interesting about the clouds?" You ask as you yawn a bit afterwards from how tired you were. It was early in the morning and you stayed up all night helping other slayers kill demons.
He didn't say anything but then you started to actually find them quite interesting, it was your breathing style after all.

You point at the cloud that's lazily resting in the sky, "That looks familiar.... A bunny perhaps?"
Then he finally turns to you and you catch his captivating eyes, turquoise and teal like irises.
"Yeah..." He said with a poker face, there wasn't any life in his eyes... no spark.
Still, that didn't change your opinion about his utmost natural beauty.

It's like you couldn't breath for a second, how was he so... beautiful. His expression was bland and far to unreadable for you to understand. What was he thinking as he looked into your two different colored eyes?
(The colors are your choice but your oc has Heterochromia)
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Back Story:

You came across an old man that taught this to you after you've been abandoned as a child by your family (if you can even call them that).
He raised you as his own and taught you the style that he mastered.

He soon passed away peacefully from old age and you've been on your own since, just slaying demons day and night. Afterwards when you met with Muichiro you both started to grow up together and stayed at the same place.
You were both fifteen when you first met and now in present time the both of you are eighteen.
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Breathing Styles-

•First Form: Soft Slash - The user unleashes a soft and powerful slash out of her Katana.

•Second Form: Acid Rain - The user could summon a cloud on top of her opponents head and it would be able to rain acid.

•Third Form: Flowing Slash - The user quickly unleashes a powerful slash that can possibly cut off anything.

•Fourth Form: Swinging Cloud - The user would be able to move her Katana very fast and able to defend every of their opponents attacks, swing her Katana would bring out clouds that would cover up their opponents vision.

•Fifth Form: Clouded Smash - The user would be able to swing her Katana on top of their opponents head and cut it down.

•Sixth Form: Cloud Maze - The user unleashes poison clouds that spreads in a big area that would be able to damage demons with poison while the demon's vision would be clouded.

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Extra Info:
Overtime he started developing more than a liking towards you but he never showed it. The feeling would've almost felt familiar to him but it was more than that.

You never knew about his crush but it was pretty obvious you were more than important to him.
He soon asked you to become his tsuguko so you try to learn mist breathing as well. No one has ever been able to master two breathing styles so you tried making it your new mission.

Your original breathing style is actually cloud breathing and when Muichiro learned about this, you really peeked his interest.

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You actually could've become a Hashira from the amount of demons and lower moons you've slain but you already became Muichiro's tsuguko which you'd rather.
Being a Hashira was more than an amazing opportunity, but being able to master two breathing techniques?!
(It's not as easy as Tanjiro makes it look)

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Summary:

You meet the Mist Hashira, soon becoming friends spending your time together with slaying demons and ect.
On one of your missions with Muichiro, you enter an abandoned house and find this mysterious trinket.
Some old pocket watch with dried blood smeared over it.
You and Muichiro woke up but everything was different, you stayed in the future for some time before finding a way to finally return back to your original home.

WARNINGS:
explicit language, fluff, violence, gore