Demon Slayer Nezuko AU |MuiNezu|

CHAPTER 1 "One faithful night..."

{Creator}: Just to clarify before the story begins, Nezuko with Tanjiro, carefully payed attention to their father doing the Hinokami Kagura so Nezuko knows Sun Breathing. This just an AU. Tanjiro is dead along with the rest of their family OFC. Nezuko and Tanjiro's father was born with the Demon Slayer Mark. And Tanjiro unlocks his demon slayer mark when he finds Muzan attacking his family. Nezuko is a half-Demon and half-Human so she unlocked her blood demon art and can use sun breathing. But Nezuko is more human than demon, because Nezuko's blood was able to turn demons back into humans so in this AU Muzan's blood does not affect and doesn't turn her into a demon. But she still has Muzan blood in her veins so she obtained demon things or something like super strength, speed, Etc. And her eyes changed since Muzan's blood left after effects on her body, and when Nezuko is really mad she can turn into a demon and maybe lose control. But she will burn since she is a demon.

💭 = that their thinking in their head

The year is 1910 and Nezuko has just turned 12

Nezuko:
Oni-Chan, be careful selling charcoal alright?

Tanjiro:
You don't have to worry Nezuko, I'll be fine. ok?

Nezuko:
Alright if you say so.. I trust you.

Tanjiro:
Ok then, I'll be on my way. Goodbye.

Nezuko:
Come home safe!

Narrator

Later that day, it's nearly nighttime. So Tanjiro stays over at the guy's house for the night. But he dreams about his family and gets worried. He decides to leave but writes a note for the old man letting him know that he went to see his family because he sensed something bad was going to happen. Nezuko, their siblings and mother are worried about Tanjiro not coming home, but they decide to go to sleep. But Nezuko is awakened by an uneasy feeling, an aura that she is unfamiliar with and feels unsafe.

Nezuko 💭:
*Wakes up* why do I feel so uneasy that I've woken up? I don't feel safe..

*Door flies open*

Nezuko 💭:
EH!?

*Everyone wakes up* and Shigeru and Hanako are slaughtered...

Takeo:
NEE-SAN MAKE A RUN FOR IT-
*slaughtered by Muzan*

Nezuko's mother (Kie):
NEZUKO TAKE ROKUTA AND GET OUT OF H-
*slaughtered by Muzan*

Nezuko:
OKĀ-SAN! TAKEO! SHIGERU! HANAKO!!
(Okā-San means "mom" in Japanese)

Nezuko 💭:
I have to get Rokuta out of here before he is killed as well..  *Grabs Rokuta and makes a run for the exit* He is only one besides me who hasn't been atta-
*Rokuta and Nezuko are slaughtered*

Nezuko:
AUUGHH-

Rokuta:
AHH-....

Nezuko 💭:
NO, NO, NO, NO, NO, THIS CAN'T BE HAPPENING!!
*Breathing Heavily*
Okā-San, Takeo, Hanako, Shigeru, Rokuta...
Rokuta isn't breathing anymore... Everyone, my family... They are all dead by now, those cuts are really deep by the looks of it... They are losing a lot of blood..
They must've stopped breathing already, I wouldn't expect Rokuta to be alive. He is small, he'd lose a lot of blood anyway thanks to those deep slashes done by that.. That monster... Including me.. These cuts are deep and I'm losing a ton of blood, I feel woozy and dizzy. I don't think I'll be able to breath at this point..

(Muzan is leaving but then...)

Nezuko:
*Cough*

Muzan 💭:
Nani!? This girl is still alive after those deep slashes. The blood I injected into her or those cuts should've killed her.. This means she's able to withstand my blood and become a demon worthy of potential. But still, she is somehow still alive after that attack? She must be useful.. Perhaps even.. No.. There's a low chance of her being able to conquer the sun since no demon has..