~Breathe~ Kimetsu no Yaiba x !Demon! Reader

🔥Fire🔥

I couldn't find Kadzuki anywhere within the estate. None of the rooms I went into contained the busty blonde, red-haired girl. I started to get nervous thinking she might've left me. I mean, that would be the smart thing to do, right? My fingers were twitching from the nervousness of being alone, surrounded by people who refuse to accept me and my existence. I swallowed the mucus building up at the back of my throat, taking a deep breath I dispelled the aching feeling of dread away from my being and continued to look for Kadzuki. It was still daylight outside but I could try and look out from the shadow covered engawa. I opened the sliding door at the back of the estate, flinching at the sight of the sun. 

I stepped out onto the engawa and took a look around at the well-tended wildlife surrounding the estate. The grey and white pebbles covering the open areas, some scattered into the dark soil holding beautiful flowers, varying in colors and sizes. I wish I could touch them and smell whatever calming and nice fragrance they would emit, but unfortunately, the beautiful perennials were bathing in the sunlight. A place is forbidden from my reach.

All that could be heard was the soft thuds of my sandals hitting the wooden floor as I walked the perimeter around the estate, searching for the first friend I made since my demonic downfall. I kept my eyes peeled while looking at my surroundings. I could see some Kakashi's come dashing past me, holding a badly battered and beaten demon hunter. I felt my mouth become a dripping wet cavern while my stomach growled seeing the limp bloody body pass by, the smell flooding my senses. I quickly turned and walked away, continuing in the same direction I was going before. Remorse crashing onto my being. The flower's fragrance suddenly becoming too much for me to digest remembering Kaoru always smelt like flowers, that's how she got her name, fragrance. I could remember what she tasted like it and it made me sick with shame and guilt.

I wanted to vomit.

I remembered her tiny soft face, her little giggles as she showed me her big gummy smile. Her soft hands holding so dearly onto my pointer finger. Her squeals and gurgles would always give me a sense of new life and euphoria. To know such brilliant innocence existed in a dark and cruel world never failed to give me hope. 

Hope... the thing my being would take way.

I was abruptly taken away from me remorseful thoughts when I heard a string of voices not too far from me. It wasn't very hard to hear due to both voices not caring if they were loud. I could easily tell who those two were, a girl and a boy. Relief feeling my being hearing Kadzuki's voice again. Thanking the gods she didn't leave. Not that I truly thought she would.

My pace quickened as I dashed around the corner to where the voices were coming from. When I came to I spotted the two radiant blonde Rengoku's conversing. At first, I felt guilt try to flood my system once again, thinking Kadzuki was getting chewed out by her brother but was replaced with remembrance seeing the two smiling each other, eyes in the shapes of rainbows accompanied by big toothy smiles. I could see red speckled on Kadzuki's face from the sheer happiness of talking with her brother. 

From where I stood I also noticed that she wasn't wearing her red geta's. She was wearing just regular sandals. Before I noticed when she stood she would slightly tower over Kyojuro by a mere half an inch, but now she had to crane her neck up to look at him. I could only assume it was a sign of respect. 

A younger sister being taller than her older brother, even by the shoes she wears, can look like an insult to those around them. That is the only reason why I could think she would take them off and wear sandals instead. That or her feet started to hurt but if she's willing to fight in those things I don't think she'll have a problem walking round in them. 

I only now just realized how almost identical the two look. The only thing making them two different people is that Kadzuki has longer hair and is a girl. It amazes me honestly. Kyojuro placed both of his hands on both of her shoulders and gave her a closed eye smile, saying something I couldn't quite hear but Kadzuki's eyes lit up and the red on her face spread while her eyes sparkled. Her round face puffing out as her closed smile grew. She looked so small and delicate at that moment.   

Kyojuro opens his eyes and the golden hues spotted me standing a few yards away from them. Our eyes made contact, I could now clearly see his firey golden eyes wide and full determination and hope. His eyes softened and smiled at me. I could feel my heart leap and almost burst from my chest, a warm feeling engulfing me. He said something to Kadzuki causing her to turn around and look at before turning around and taking his leave. 

Kadzuki started to walk her way over to me, red still visible on her face. "It's only been a few hours but it feels like I haven't seen you in days." Her honey-like voice seeped into my ears.

"So much has happened in those hours... I yelled at a pillar..." My smiled faded into godforsaken fear-stricken face.

"Sanemi?"

"No, after the trial."   

"Oh, who?"

"Shinobu."

She laughed and waved her hand at me. "Don't worry about that. I doubt you said anything wrong so I'm sure she'll forgive you... maybe just on the outside."

"I told her she shouldn't be so one-sided about demons..." I looked down at my feet.

"That is nothing you should be ashamed about. You're right. I've always wanted to tell her myself but she tends to forget demons were once human, innocent humans forsaken to a horrible curse. You have every right to tell her that, especially based on your position at the moment." Her words did not ease my worries. I could have still been nicer about it. She lost her sister to a demon. It's as if Kadzuki could sense my dismay because she gently placed her hands on my shoulders causing my head to look up at her. 

"y/n..." She called gently, making me feel as though I was being hugged by a gentle fire. "None of this is your fault. Now I hardly know you or what you've been through...but I do know your family doesn't blame you for what happened. You being here... proves that Muzan's curse doesn't work on everyone. This shows his weak spot. Y/n your very existence can turn this war around and you shouldn't let anyone make you feel as though you're as evil has Muzan himself or an as useless as dead mouse. I made the decision to take you from that cave and help you and I intend to see this war to the end, with you."  Her gold-green eyes stared intensely into my e/c irises. I could clearly see all her features as her face was only a few inches away from mine.

Her heart-shaped face, her round chubby cheeks, her plump pink shiny lips, her wide eyes and her large hues, her gold and red locks shaping her face like a curtain made of pure sunlight. Her concave nose giving off a child-like look. I could feel my heart hammering in my chest as tears began to apper in the corners of my eyes. 

Before I knew it big buddy tears were pouring out of my eyes and my face became splotchy and red. I wrapped my arms around Kadzuki's waist and buried my face into her chest. Her shoulder to high for me to reach. I continued to sob into her chest, soon feeling her arms wrap around my back and pulling me close, her arms becoming tighter. I could feel her head on top of mine. My legs began to go weak, I had to depend on Kadzuki to make sure I didn't fall. She let both us of fall to our knees so that I was sitting in her lap while my face was still crying into her chest. "I'm sorry Kadzuki..."

"For what?" Her voice was so soft I wasn't even sure I heard it. I snapped my head up, wiping all the wet residue off my face and looked her in the eyes. 

"I promise I will get stronger! I promise I will! I will never let you get into this position again! I will stop crying over every little thing! I promise I will avenge my family! I promise!" All she did was smile at me and it gave me the confidence to carry all these promises through.

"I know." She closed her eyes pulling me back to her. "You better not break your promises, you hear?" I nodded and smiled, letting whatever tears were left out.

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[Edited] :)

Kadzuki is the first OC I have ever put into a story.