Haunting History (KNY x Fem!Reader)

A girl, snow, blood, friends, tragedy, family, past, mystery, and many other things.
~--------~
Snow falling around me.

I wonder about my past as I grow colder.

The thing is I can't remember what happened before I was laying in the snow, dying. That was when I met Hajime, my older brother.

My "family" is running around in the yard. They're not my real family but they make me feel like I am.

I want to know. I want to know what happened before I was in this family.

I've forgotten. That's bad.

If I've forgotten that means it's something bad enough for me to want to forget.

But I still want to know. Without getting killed by the monsters that are known as demons in the process.

It'll be hard I know, but I will figure it out, without getting either myself or my family, the Kusou family, killed.
~--------~
Can the girl figure out her past, or will she never find out?

Can she get revenge for the deaths of many people?

Can she save her favorite characters?

DISCLAIMER: I do NOT own Kimetsu no Yaiba.

This story is more of an Oc x reader thing, but you can change the main character however you want. Please feel free to change the main character to your liking in this story, however, I will be writing the main character how I want.