Always With Me{A Demon Slayer Fanfic}

Part 3: Karuka And Rina

After we were found in the remains of our house, we were taken to the Butterfly Mansion where we were given proper medical treatment.
(With Y/n)
"So, what's your name?" I asked the girl treating me.
"Karuka. Karuka Utakata."
"You have a nice name! How old are you?"
"Twelve."
*Hmm... this girl doesn't seem to be the talkative type...*
"What's your breathing style?"
"Sound."

Just then, a girl with butterfly hairclips came in.
"Miss Karuka! She's back again!"
"My gosh, what has Iguro been doing to her?! Aoi, take over here please."
Karuka ran outside, leaving the butterfly girl and me in the room.
"So, your name's Aoi?"
"Yep. What's yours?"
"Y/n."
"Hmm. What about those two kids who Tomioka-san and Kochou-sama brought back here?"
"Ah! Those are my siblings! B/n and S/n!
Are they alright?"
"They're fine. Where did you even come from?"
"The Red Light district."

Then Karuka came back in, with a girl with 2 different-colored eyes.
"My God, Rina! What the hell happened to you?"
"I already told you Karuka, TRAINING."
"Training my ass."
"Come on, he just got a bit violent!"
" *slam* RINA, YOU'RE A FUCKING DEMON! HE'S USING YOU AS A HUMAN PUNCHING BAG!"
"She's a demon?!"
"Crap."
"Shit."
"Let's run."
"Yeah."
Karuka and the demon girl ran out of the room, and Aoi had to restrain me.
"Y/n, Rina didn't become a demon cause she wanted to! Muzan Kibutsuji slashed her with a bit of his blood!"
"Ara ara~ What's happening here~?"
"Kochou-sama! Y/n found out about Rina!"
"Y/n, as Aoi said, Rina became a demon because Kibutsuji slashed her with a bit of his blood. Y/n?"
"She's gone!"
Shinobu and Aoi ran through the whole mansion, and finally found Karuka, Y/n and Rina.
"Lunch is served!"
Rina and Y/n had made food, and were acting like friends already.
"What in the world happened to you two?"
"She told me that she wouldn't hurt me. We're friends now!"
"Hurry up, the food's going to get cold."