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

Survival

Tocho's P.O.V

I fully put on my mask to hide my identity, because I don't want other slayers to know that I'm a demon.

"Nezuko, I'm gonna have to leave you, promise me you won't die?" I asked her.

She nodded, "I won't. No promises, but I won't go down so easily until Tanjiro can be brought back."

I smiled, "Good. Can't have my sister dying on me."

We split up, and I blitzed through the demons, cutting them down and feasting on their flesh, which, I discovered, didn't taste half bad.

I was in the process of eating a demon when a girl popped up out of nowhere, looked at me, and charged me with a knife.

I caught her arm and put her in an armlock.

"Hey, calm down, I'm trying to survive, just like you." I whispered in her ear.

She looked at me, frightened, but eventually relaxed.

I exhaled, and let go of her arm.

"Look, I won't try to deny it, I am indeed a demon, but I'm not like those heartless monster who only care about food. My brother has been turned into a demon, a semi-mindless one, he lost some of his memories but he still shows restraint towards hurting humans. I'm becoming a slayer to hunt down the demon who can turn my brother back to human." I explained, "If you want, you can stay with me, you won't die. Not if I can help it."

She nodded slowly.

"Great, we should set up camp for now, I'll protect you from the demons."

"Okay..." She said, speaking for the first time.

I cut down some branches and started a fire, taking some demon flesh and roasting it.

"Oh, by the way, what's your name?" I asked her.

"H-huh? Oh! It's Erika, Erika Agatsuma!"

Her black hair waved in the wind, her ebony eyes shone in the moonlight.

"Well, nice to meet you, Erika. I'm Tocho, Tocho Kamado."

Once I'm satisfied with the meat, I took it off the fire and handed some to Erika.

She took a hesitant bite, but the reaction was instant.

"This is good! What meat is this?" She asked after swallowing.

"Demon."

She nearly choked on her food, "What?!"

I shrugged, "It's the only meat I could find. I didn't kill the demons, since it would make the meat disintegrate as well, I just left them hanging in trees so they burn when the sun rises."

She slowly calmed down, "Okay, I can get into this..."

I suddenly remembered something. "Hey Erika, how old are you?"

"I'm 14. Why?"

My eyes widened. This young and still in the Final Selection?

"You're so young... I mean, I'm 15, so not much better, but still..."

"My brother is also here, but he's a coward and ran away. He's strong, though, he's just a coward."

I nodded, "Same with my sister, but I split up with her, she needs experience on her own, though she should be fine. She's always had good eyesight, she can see things that other people can't."

"My brother has a good ear, he can hear a lot of things. But he constantly gets lied to and he can tell when he does, which made him hesitant to trust anyone, so if we do survive, he might have a hard time trusting you."