Previously on Prologue

"Okay, mama..." Y/N said, in a hushed voice that is loud enough for her mother to hear. Y/N's mother smiles softly as she feels happy her daughter agrees to her request. She slowly closes her eyes. Tears starts streaming down Y/N's cheeks. She lowers her body and places her head against her mother's chest as she cries.

I promise, mama... I'll be stronger and I will fulfill my promise to you

-My Promise-

Y/N P.O.V

I jump out of the way as the demon strikes me with his tongue. I clutch my sword tightly as I swing it to cut the demon's tongue. It screeches in pain and glares at me. The tongue that I've severed grows back not long after I cut it.

"Curse you!!!" He screeched. I quickly resume to fighting stance. I jump again as he lunges at me. I block the attack with my sword. The impact is too strong that I got send flying back. I crashed into a tree. I gasped out as I try to regain some oxygen back into my lungs. I roll out of the way as the demon tries to slam his body on me.

I feel a cut on the side of my cheek as the demon strikes again. I slowly stand up as I glare at the demon in front of me. The demon smirks as he stares at me. The smirk on the demon face falter as the wound on my cheek already starts to heal.

I smirk at him as I lift my sword. I lunge towards the demon and jumps, using my feet as leverage to gain a faster speed. I slash through his neck, separating his head from his body. I land on the ground on my feet. I turn to the demon as it's body starts to turn into ash.

"W-What... a-are y-you..." he asked. I walk towards him as my sword transform into its smaller form. "You're not normal..." he said. I feel my chest tighten by his comment. It's exactly what those cruel people used to always said to me when I was a kid.

"Me?" I said. I walk towards him and squad to meet his eye-level. I let my eyes change color.

"I'm a half-demon..." I said. His eyes widened at what I said. His head slowly disappear into ashes. I close my eyes as I stand up. I open my eyes as they transform back to their usual e/c color.

I let out a sigh as I turn to look at the horizon. The sun starts to rise. But I'm not the slightest bit worried about it. Since I'm only a half-demon, with a human's blood in my vein. The sunlight doesn't bother me like it does to other demons.

I place my sword inside my haori. I feel a little tired from the battle. I should return back to the base now. I turn around and make my way towards the direction of the base.

No one else beside me that knew my true identity as a half-demon and I planned on keeping it that way. I've finally had a chance to live a normal life like an ordinary human. I don't want it to be ruined.

***

I make my way inside The Butterfly Mansion. I've lived here ever since I became a Demon Slayer. Since I've been showing good performance and have beaten quite a lot of demon, I've earned the title as a Hashira.

"Y/N-Chan! You're back!!" Someone yelled out. I turn around, only to get pulled into a tight hug. I blink my eyes in surprise at the sudden move. But I hug the person back nonetheless.

She pulls away from the hug and grins at me. "Wow, and once again, you returned back without a scratch!" She said with so much enthusiasm. I just smile at what she said. Neither of them knows the truth of my identity. So they didn't know that I'm a fast healer because of the demon blood that is flowing inside my veins.

"Yeah... but I'm exhausted from the battle. So I'll be going to my room and rest" I said. She smiles and nods her head. I give her shoulder a gentle pat. I turn around and make my way to my room.

I push the door to my room open, entering it. I slide close the door behind me and walk towards the futon. I let out a sigh as I lay down. I turn my head to the side, staring at the photo of my late mother. I reach over and grabs it. I stare at it, lifting my free hand as I caress her photo.

"Mama... I'm fulfilling the promise I gave you. So far, I have succeeded in killing a lot of demons to protect the humans. Just like I had promised... and I will always do the same... for you, mama" I said. I place the photo on my chest as slowly close my eyes, letting myself drift off to sleep.

Dream

I keep running and running. I can hear the sound of footsteps coming closer behind me. I turn around only to trip on a roof sticking out of the ground. I wince in pain as I feel my knees getting scraped. I clutch onto it as I let out a pained cry.

I hear the sound of laughter as the people who kept on tormenting me starts to surround me. "Leave me alone! I had done nothing wrong! Why do you keep bothering me" I said.

"You're a freak! And we hate freaks!" One of them said. They start to beat me up until my body becomes weaker. I keep begging them to stop but they only laugh and keep going with their assault.

End of Dreams

"Stop!!!" I screamed out as I sprung up into a sitting position. I stare at my lap while breathing heavily. It's been years since I left that place and since I had become a Demon Slayer. But those horrible memories keeps on haunting my dreams.

I let out a sigh and lay back down. I turn my head to the photo that have slides of my chest. I lift it up and place it back on its original spot, next to my futon. I turn to lay on my side as I stare at the photo of my mom. I miss her so much. Every time I feel upset, mama would try her best to keep me comfort.

I close my eyes as I hum the song my mom used to sing for me. Tears starts to stream down my cheeks as I cover my mouth. I stand up as I walk towards my wardrobe. I open it and take out a gift mama gave me. It was the first and the last gift she ever gave me.

"Mama..." I cried out, as I hug the doll close to my chest. I walk back towards my futon and lay down. I hug the doll close to my chest. I close my eyes as I curl up while hugging the doll tightly.

Don't cry, sweetie... everything will be alright. You're such a strong child... I hear a gentle voice. I open my eyes as I look around. I've always felt like mama is close to me whenever I hug this doll. Keep smiling... her voice said.

I wipe the tears and start to smile sadly. What I'd give to have my mother with me. But I know that isn't going to happen, because she have left this world. I slowly close my eyes and hugs the doll. I feel tired after all the crying. Hopefully this time, I won't have any nightmares. My breathing evened out as I drift off to sleep.

*to be continued*