Demon Slayer Oneshots

Kagaya x Fem!Reader|Another World

I forgot this existed... Again. So um- Sorry? Someone should remind me every other day this exists at this point... Then maybe I won't speed write something to post. But I'm also trying to work on an actual fanfiction rn so-
My small heads up is that Kagaya DID have his kids at this point, but his wife sadly passed (which gets mentioned later, but I thought I should say it here first)
MAJOR MANGA SPOILERS FOR THE FINAL ARCS OF THE MANGA!!!
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I wasn't from this world, to put it simply. The world where demons existed, and there were slayers to kill them... That wasn't my real world. My real world was one where this world was a manga. A manga I had read several times. A manga I had spent many tears on. Now here I was, infront of the master of the demon slayer core. The only difference was this was before the manga took place.

"I knew you'd arrive eventually. It's nice to finally meet you Y/n," The master, Kagaya Ubuyashiki, spoke softly with a smile.

I didn't even acknowledge his words for a few seconds. I was too distracted by his appearance. The curse was only over one of his eyes, his left. He could still see yet. But based oh how far the marking was, I'd take a guess that I came around the time Sanemi Shinazugawa became a pillar...

"Wait," his words clicked, making me panic, "You know who I am?"

As I kneeled before him, confused, I tried thinking on how that was possible. He knew who I was? How?! I was from another world, one where this place was fiction... Then it clicked.

"Oh, foresight..." I mumbled out.

Kagaya contined to smile. It was as if he knew all about me, which he might have for all I knew. I didn't even want to think on thay thought.

"I'm looking forward to getting to know you better, you know. It seems to me you'll do great things while you're here... Of course, you'll need some guidance at first," Kagaya stated.

I looked up at him, confused. Guidance? Why would I need guidance? What for?

"In the vision I had, I saw you saving several of my children," by children Kagaya meant the demon slayers, "So I only hope what I saw was true... So I've made plans for this. For you to become a demon slayer, if you wish."

My eyes widdened at the mention of being a demon slayer. Back in my world, I always wished to be part of the demon slayers and wished they were real. Now that it was a reality, I could do it.

"Of course, Master Ubuyashiki... I will become a demon slayer, going as far as I can to save others and rid this world of demons," I bowed my head as I spoke.

"No need to bow. Don't lower your pretty face, ot would be a shame to not see it while I can."

My head shot up at the response. I was confused and shocked. In the manga of Demon Slayer, Kagaya Ubuyashiki was married and had kids. Hell, I saw his son earlier! So why was he-

"My wife passed while giving birth, just over three years ago..." Kagaya stated softly.

She what?! But that didn't happen in the manga. She didn't die until she was- No, don't think about that...

"I see, I'm sorry for your loss."

Kagaya reached his hand out, placing it on mine, "It's alright. Don't think about it. I can see you're still in shock about this all... How about I introduce you to a trainer?"

That was how this all began. I became a demon slayer, in just a year and a half. I climbed the ranks quickly, becoming a hashira in no time. I had spent more time with Kagaya as well, being a hashira and seeing him personally to check up on him. But now it was the time I was dreading, the hashira meeting with Tanjiro Kamado...