The Child of Darkness (Demon Slayer Role-Swap AU x OC)

Capture

Tocho's P.O.V

I laid Nezuko and Tanjiro down near the trees so that they could rest, and jumped back into the trees on a search-and-destroy mission in case there are anymore demons out there.

I looked around for any demons, but all I got was ashes and dust.

Well, ashes to ashes, dust to dust, am I right?

I chuckled at my joke.

There were several weaker demons in the surrounding area, I managed to take them all out, but before I could get back to my siblings, I detected multiple people headed in their direction.

I didn't want to brew unnecessary trouble, especially not with other demon slayers.

I jumped back to where my siblings were and saw Tomioka defending Tanjiro from a purple-haired girl who had no expression. She radiated hate and loathing. I could feel it in her breath and heartbeat.

"Oh, come on, Tomioka-san. Defending a demon? Isn't that against corps rules?" She giggled, sheesh, she's a huge sadist.

"He's harmless." Tomioka growled.

"Hm. And I can just take your word for it? He's a demon."

Tomioka sighed, turning to Nezuko.

"Hey kid, can you still move? Grab your brother and get out of here. I'll cover your escape."

Nezuko shakily stood up, "Thank you, Giyu-san!"

Nezuko grabbed Tanjiro and ran off.

I decided to follow her but stayed out of sight, there was another one coming.

A girl who looked similar to the first one suddenly dropped in, kicking Nezuko in the back of the head and chasing Tanjiro.

"Tanjiro! Run!" Was all Nezuko managed to say before the other girl broke her jaw.

Hold up, wasn't that the quiet girl from Final Selection?

Well shit.

She kept swing at Tanjiro, but he was smart, and managed to shrink down into a child-size version of himself, running as fast as his legs could carry him.

If her goal is to kill all demons, then she won't stop until Tanjiro is dead.

I can't interfere. I won't until his life is truly in danger.

After a while of chasing, a crow circled overhead, telling the demon slayers to bring in my siblings, and it described what they looked like.

I could see the girl crouch down and ask whether my brother was Tanjiro Kamado, and he nodded.

She stood up and walked back to Nezuko's unconscious body.

Kakushi members grabbed them and carried them away, Tanjiro in his box and Nezuko in someone's arms.

I decided to follow them to a massive building, I hid in some of the Wisteria trees, waiting for them to do something.

Shortly after Nezuko woke up, a white-haired guy with scars on his face appeared with Tanjiro's box in his hand.

After an inaudible exchange, he stabbed his sword into the box.

I gritted my teeth, I was tempted to skewer him.

Nezuko broke out of a Kakushi's grip and kicked him really hard in the side of the head.

The box dropped and Nezuko ran in front of it protectively.

"Don't hurt Tanjiro!"

Scarface stood up and grabbed Nezuko, throwing her aside like a ragdoll.

I was about to charge him but something stopped me.