Disclaimer: Obviously neither Honkai Impact 3rd or Demon Slayer belong to me. Do I look like MiHoyO to you???
In a town known as Nagazora there was once a very known rich family. Raiden Ryoma was a very succesfull buissness man, untill he came out as being a fraud.
He disapeared, leaving his daughter Raiden Mei to fend for herself. She became an outcast amongst her peers, looked at with disdain by the adults.
It was so bad that she considered running away, changing her name and start her life anew.
That is untill she came along.
A girl around her age with very clear foreighn hiretage. Her hair was white as snow and her eyes the color of the midday sky. She said her name was Kaslana Kiana and that she was passing through.
Mei, who lived alone, meeting someone who doesn't know who her father is, who seemed to like her very much so, she offered Kiana to stay with her aslong as she needed to.
Kiana happily took the offer.
She stayed a few days, those days turned into weeks and those weeks turned into months. She didn't leave and honestly?
Mei very much so hoped she wouldn't leave at all.
The two were happy living at the edge of Nagazora, the forest was a little treck away. They had their own garden, they told ghost stories at night.
However the ghost stories about Man-eating Demons Kiana always insisted on being very much so true. Mei didn't exactly believe in such things but never said anything about it.
Well that is untill one night...
One night an intruder broke into their house- red eyes glowing in the dark. Slitted like a poisonous snake, dark wavey hair.
Mei was thrown against the wall- no through the wall from the sheer force of the attack. She heard Kianas scream of outrage as she attempted to stand again, hot liquid traveling down the side of her face.
She saw Kiana dodge an attack and stab the demon with Meis long Kitchen knife, it seemed surprised just for half a second before anger marred it's face before her friend was struck down.
Mei felt anger like nothing she felt ever in her life, she shot out from where she was- grabbed an older katana from the wall as she did so, determined to protect Kiana even at the cost of her own life.
Mei awoke slowly, everything hurt. Everything burned.
She was lying in a puddle of her own blood- but she couldn't focus on it, Kiana is hurt aswell!
Forcing herself up she spotted familiar white hair(sticking together with dried dark splotches of blood), she was sitting up meaning she wasn't dead and Mei felt relieved but then Kiana turned around.
Her beautiful sky blue eyes were a cold amber color, fangs she new for a fact she didn't have before glinted in the dark as she suddenly lunged at Mei.
The dark haired girl moved aswell, causing both her and Kiana(?) to roll across the ruined wooden floor.
"Kiana-chan!!" Mei yelled desperetly as she kept those dangerous fangs away from her- pushing away sharp claws ready to tear her apart.
"Kiana-chan please!"
Kianas expression changed, shock and fear could be seen clear as day. One of her eyes returned to blue as she gave up trying to hurt her. The previously slitt pupils rounded out, and the claws and fangs seemingly disapeared.
"Mei-Senpai...?"
Mei jumped foward and hugged Kiana tightly before she could try to retreat or run away. She knows her to well by now, she would not let her try to handle things by herself.
"Kiana-chan are you okay now...? You scared me..."
"y-yeah..."
"Hello?! Is anyone here? Preferably alive?"
The two jumped. They had never heard this voice before and got defensive.
An old man with a mustache, scar in his face and(relativly short) wore goldish brown clothing. He himself was atleast as tense as them.
"Yes." Mei awnsered, full of resolve despite her in pain body. Kiana watched with furrowed eyes but didn't say anything, the old man saw them and seemed relieved.
"oh thank the gods, I feared that the demon killed you already."
"Who are you Jiji?" Kiana said, quite rudely so aswell. Had it been any other day then Mei would have reprimanded her for such unformal japanese, but not today. She couldn't bring herself to care right now.
"I am Kuwajima Jigoro, a former demon slayer."
Kiana jumped to her feet at this, also pulling Mei up by doing so. Who stumbled and nearly fell over.
"Can you teach us?!"
Kuwajima looked them over.
"Before I can teach you anything you'll have to recover from this demon attack. Come, I'll get you two patches up at my estate."
And thus their Story as demon slayers beginns. It was a twist of fate, one Mei wished hadn't come apon them.
Had that demon not arrived, then she and Kiana wouldn't have been forced to change their fate. However it happend and they will live with it.