Outfits(Choose or change the colour if you don't like it ! The one above count !) :

Basic :

Y/n : Your name

L/n : Last name

N/n : Nickname

M/n : Middle name

F/c : Favourite colour

S/f/c : Second Favourite colour

F/f : Favourite food

E/c : Eyes colour

S/t : Skin tone

H/c : Hair colour

Temper : Y/n is a very nice person, she sometime can be cold hearted when others hurt her friends, she like getting in trouble sometimes, she love braiding Nezuko's hair or play with Tanjiro's soft hair. She is very cheerful and lovely, she has this calm aura and very appreciated of others. Fact : She got over 50 letters to marry their son in marriage, even girls because Y/n is Bi or Pan if you prefer it this way, but she didn't know that because every time before she could open the letter, Hanako, Takeo or Shigure would take it and gave it to their older siblings, if it is a marriage letter, they both would burn it in the fire wood without Y/n knowing. She was very pretty !

Look : She has sparkling E/c eyes that are even more beautiful in the moon light, she has a soft S/t skin, she has long, soft and pretty H/c hair, she wears a beautiful Kimono her favourite is (Kimono you choose above) and wears it most of the time ! She also have a F/c bow to keep her hair in a high ponytail. 

Past : Her parents die a from a decease and got all their fortunes, she used it to travelled around the world, she stopped at a village that looked nice and bought a house, she then buy furniture's for her house and soon met a Burgundy haired boy a year or two older than her, she soon found herself talking to him, both became great friends and soon best friend with the older male's sister. Soon, without Y/n knowing, both the older male and older female had developed feelings for the younger female, both agreed to share and destroyed every love letters or marriage letters she would receive, because she was their neighbours for at least... 30 feets away ? Yeah, so they all became close, the siblings younger siblings really appreciated you and also helped the two in their task of destroying the letters.

Abilities : Can feel or see aura clearly, she can recognise Tanjiro or Nezuko's aura very clearly.

Race : Human(Former) Demon(Current)

Age : 17(for now) 19(Later on)

Tanjiro's age : 19(For now) 21(Later on)

Nezuko's age : 18(For now) 20(Later on)

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Author-chan's Pov 3rd person :

  Two huffing noise from exhaustion and painful persons was heard, as blood dripped on the cold, white snow, along with two snow print of foots, a girl on a boy's back and an other girl running next to him, both were crying and took several glance at the girl. Both had the same though, 'How...? How did this happen ?' the boy though, 'Y/n, don't die ! Don't die on us !' Thought the girl. 'We're gonna save you, no matter what !' Though both of them while still hurrying up down the snowy mountain, 'We won't let you di !' they both though once again, "We're swear your best friends will save you no matter what !" Both said in unison.

Before everything happen...

  The boy lifted up a basket full of charcoal, his sister did the same, both had some soot on their faces and a small voice called out, "Tanjiro, Nezuko ?" both turned to see a woman in front of a door, wiping her hands from whatever she had. "Your faces are covered in soot." said the women, "Come over here." She wiped off the soot on Tanjiro's face and Nezuko's face, "It's dangerous with all this snow. You both don't have to go, you know ?" said the woman, "Well, me and Nezuko want everyone to eat at their fill on New Year's," Tanjiro said, and Nezuko finished, "So we're going to sell as much charcoal as we can." The woman smiled and said, "Y/n will be invited as well, i suppose ?" the woman asked, both nodded with hue of pink. "Thank you." she said, a younger male's voice was heard, "Onii-chan ! Nee-san" they looked to the side and two children spoked up, "You guys are going to town again today ?" said the boy, "I'm going with you two !" said the girl, the woman stood up and shook her head, "Oh, no you're not. You know you can't walk fast as Tanjiro and Nezuko."

"Mom !" the boy said, "You may not. Since they're can't use the cart today, they won't be able to give you a ride when you get tired." the woman said, they both frowned and looked very sad, "Onii-chan ! Nee-san !" the boy said, hugging the boy. "I wanna come with you ! I promise i'll help the both of you !" the girl said, "Thanks, Hanako." Said Tanjiro, patting her head, Hanako's eyes lightened up before holding a sad face after. "But you're staying home today." Nezuko said, Tanjiro crouched down and said, "You too, Shigeru. But we'll get you a tons of goodies, okay ?" "Really ?" beamed Shigeru, "Yeah." reply Nezuko for her brother, "And Hanako, i'll read for you when i'm back." Nezuko said, "Okay !" beamed Hanako. They talked for a while until an other male's voice was heard, "Sure, i'll do it, but... I was hoping we could do it together." he pouted and Tanjiro walked over to him, patting his head, "There, there..." Said Tanjiro, "What's with that all of a sudden ?" Takeo yelled, pointing at Tanjiro, "You're blushing, Take !" said Shigeru.

"Hey, you shut up !" Takeo reply, "There, there." said Tanjiro again while patting Takeo's head. "I said, cut it out !' Takeo yelled, Tanjiro and Nezuko took off to their destination, "Hurry back okay ? We'll take care of Y/n !" Shigeru said, "Be safe !" Said Hanako, they both waved bye before turning and walking again. On the way, a girl with H/c locks and E/c eyes walked up to them, she was wearing a K/Y/C(Kimono you choose) kimono and called them when she felt their presence near by, "Nezuko, Tanjiro, hay !" beamed a cheerful aura. "Hey Y/n !" beamed both at the sounds of their crush, "I was putting down Rokuta for a nap, or like always, he'd make a scene when you both leave." said Y/n, signing a bit. "He missed Tanjuro a lot since he passed away." Y/n said sadly , looking at Rokuta, "And everyone follows you two wherever you both go." you said with a smile, both Nezuko and Tanjiro patted Rokuta's head, then Y/n's, she blushed in embarrassment and looked away, she loved head-pat and the both older persons knew about that.

"See you guys later !" Y/n said while doing a closed eyes smile at them, as both siblings walked down the mountain, Tanjuro had thoughts, "We don't have an easy life, but we're happy. But life could change suddenly like the weather. It's shift and move on. It's not like it always stays sunny, and it's not like it ever snows endlessly. And... Whenever happiness is destroyed, there's always...The smell of blood...'

After helping the villagers and selling all the coal, it was really dark outside, and both Nezuko and Tanjiro started to get up the mountain when a man stopped them. "Hey, Tanjiro, Nezuko ! Are you guys going to head back up the mountain ? You both better not, it's to dangerous." "I've got a good nose, so we'll be fine." Tanjiro said, Nezuko nodded and looked very tired, "You guys can stay here for the night. Come on, get back here." the man said, "But..." Tanjiro didn't have to finish his sentence when the old man said, "Don't argue ! Come on ! Before the demons show up." he said. Both came back down and ate at the man's house, "Thanks for the meal." Tanjiro and Nezuko said to the man. "Hey, Mr. Saburo, what are demons like ?" asked a curious Nezuko, Tanjiro perked up, looking also curious, "Man-eating demons have always prowled the land once it gets dark." he said, preparing two futons, one was for Nezuko and the other, Tanjiro, "That's why you should never stroll at night. If you both done eating, go to bed. You can set off for home at first light." as Nezuko and Tanjiro were laying in there futons, a question popped in Tanjiro's head.

"Could these demons come inside your house ?" asked Tanjiro, "Yes, they could" reply Saburo as he made a third futon for himself, "Then, everyone would get eaten by the demons." There was a silence, but Saburo reply with, "That's why the demon slayers protect us by slaying them... Since way back." Saburo said. "Light out now, both of you." and Saburo turned the light off, Tanjiro and Nezuko though of paying him a visit with their siblings and Y/n,  Y/n stayed at their home because she liked spending time with the Kamado's and also wanted to talk with the older siblings.

Morning soon came, "You both be careful now." said Saburo while waving bye, "Okay !" Tanjiro said, "Mhm !" Hummed Nezuko happily, walking up, Tanjiro stopped in his steps, so did Nezuko, 'Whenever happiness is destroyed, there's always...' "T-the smell of blood !" Stuttered Nezuko, both started running with their baskets on their back. When they both were at the house... Two bloody corps were outside the destroyed doo, one was under the other, Both Nezuko and Tanjiro were horrified by the scene, gasping at the realisation, they rushed up to the corps, getting down on there knees looking at the H/c-ette bloody body with Rokuta under her, "Y/n !" beapmed in pure horror Tanjiro, "What happened ?! What's going on ?!" asked Nezuko to the injured Y/n, "What happen here ?!" asked Tanjiro and both looked to the side.... To find...

Walking closer to the door, both with teary eyes, "Mom..." Tanjiro felled on his knees and Nezuko stayed there, petrified by the scene, "Mom...Hanako...Takeo...Shigeru...Y/n...Rokuta..." Said Nezuko, now both of them were running with the little Y/n on Tanjiro's back, she was badly injured, "Y/n's the only one who's still warm." Said Nezuko while breathing heavily in the cold air, their lungs were getting filled up with cold and displeased air, 'I we can get her to a doctor, she might survive ! How did this happen ? Was it a bear ? Was it a bear that wasn't able to hibernate ?' as they were running, a log was on the way and Tanjiro jumped over it, stumbling a bit, Nezuko helped him get up and they ran again. 'I can't breath... the air is so icy. My lungs hurt. Keep moving forward. Move your legs faster ! We still have a long way to go before town. Hurry ! We won't let you die !' They both didn't notice Y/n's fingers twitching, she lifted her head up and started growling, her finger nails were sharp and she gripped on Tanjiro's back, Tanjiro fell and Nezuko tried to save him but only fell as well.

Y/n jumped away from them and was now in front of a tree, head low looking the cold ground, falling, they both were scared and thankful for the snow saving them, but also weren't because it was the reason they felled, "Y/n ?" Nezuko said, getting up,  looking around, both saw Y/n standing, "Y/n, are you alright ?" asked Tanjiro, getting on his feet and run at Y/n, "You don't have to walk ! I'll carry you to town, okay ?" Tanjiro said, "Y/n !" Nezuko called out, lifting her head up, Y/n had cat-like pupils, sharp fangs and veins popping out of her head, her H/c locks turned into F/c at the tips, she gripped on Tanjiro growling and tried to bit him, Tanjiro was shocked, she pushed him and they were falling, he took his hatchet that he had with him and Y/n bit it. She pushed Tanjiro more and they felled in the snow, Nezuko came closer and tried to shove Y/n off of her brother, "Sh-she's a... a demon." Said Nezuko in pure shock, 'Y/n's a man-eating demon ? No, Y/n's a human ever since she been with us.' Though Tanjiro, "She no longer has Y/n's scent ?!" Said a confuse and shocked Nezuko, Nezuko hand her arms wrapped around Y/n's waist and tried to shove her off.

'But it wasn't Y/n's doing. She was lying as if she was protecting Rokuta, and there was no blood on her hands and around her mouth, and there was one more, there was an other scent !' Tanjiro though, Y/n's body grew and was pushing Tanjiro harder, Nezuko's stared in shock at Y/n's grow up body, she was in her adult form ? "Sh-she just grew in size ?!" Both exclaimed,  'And she's getting stronger and stronger ! While me and Nezuko were sleeping carelessly at Saburo's house, they were murdered brutally like that. I know it's must've hurt, you suffered, didn't you ?' Tanjiro's eyes were filled with sadness knowing his and Nezuko's crush suffered a lot, 'I'm so sorry i couldn't save you. If only i could help Y/n at least. But she's to strong for us to push her back !' Tanjiro though once more, "Y/n ! Hang in there, Y/n !" Tanjiro said, "Don't give in ! You gotta hang in there !" both Nezuko and Tanjiro yelled at the Y/n, "Don't turn into a demon ! You gotta stay strong ! Hang in there !" Tanjiro yelled, "Hang in there !" Yelled Nezuko from behind still trying to help her older brother, Y/n stopped struggling and pushing, both Nezuko and Tanjiro looked at her wide eyes, she was crying tears of sadness.

A man with a mismatched haori soon came and tried to cat Y/n's neck off, Nezuko and Tanjiro pushed her, Tanjiro by the neck and Nezuko by the waist, Tanjiro's hair got cut instead, as a big wave of snow came. The three of them hit a tree and Y/n turned into her normal size, "What the..." Tanjiro started, 'Who's that ?' Though Nezuko as did Tanjiro, Tanjiro was holding Y/n as Y/n was trying to find her way to her real self, not her demon self. "Why are you protecting it ?" asked the unknow man, "She's our best friend !" Said Nezuko, "She's our Best friend !" repeated Tanjiro, Y/n whimpered in Tanjiro's hold and wanted some space because he yelled in her ear and tried to walk away so she can fight the demon she is herself, so she growled, Tanjiro and Nezuko, however had a tight grip on her. "Y/n !" said Tanjiro, "You call that thing your best friend ?" Said the man, Tanjiro and Nezuko glared a bit at the man but they looked at Y/n and away, the man lashed himself at the three, as Tanjiro and Nezuko bent down to protect their crush, they realised that she's no longer in their hold.

Looking around, both saw Y/n in the man's hold, and Y/n was growling, not in a way to bring harm, but more in a way of fear, she wanted to walk away from the man that had a strong hold on her. And that, both siblings saw this and were mad a bit, "Y/n !" Both said, "Don't move." demanded the man, "My job is to slay demons. Needless to say, I'm going to decapitate your Best friend." Y/n gasped and she glanced at the man, she had fear in her eyes, she didn't want to die, she just wanted to have a normal life with her friends. "Hold on !" said Tanjiro, "Y/n hasn't killed anyone !" Nezuko said, Y/n nodded, which didn't pass unseen by the man, he held a blank expression but was shock in the inside, the 'demon' could understand them and wasn't really doing anything but trembling a bit from fear, Tanjiro and Nezuko keep explaining and telling that they would turn her back but it didn't seemed to convince the man much, Y/n was on the edge she wanted to hug Nezuko crying form and help Tanjiro up, he was on his knees after the man put his blade near Y/n's throat.

Both were crying mess and begging to don't kill there best friend, "The demons might know how to cure you two's best friend ! BUT DON'T THINK THAT A DEMON WOULD RESPECT YOUR WILL OR WISHES ! NATURALLY, I HAVE NO RESPECT FOR THE BOTH OF YOU, EITHER ! THAT'S REALITY !" said the man Y/n whimpered when the grip on her wrist became stronger, hurting her. Both Nezuko and Tanjiro cried at the end of the man's explanation, lifting his sword up, near Y/n, Y/n stared wide eyes and started to moved around trying to not get hurt, but the man's hold was stronger and she was stabbed in the shoulder/chest she screamed painfully tears in her eyes from the sudden pain, "STOP !" Screamed out Nezuko and Tanjiro as both lashed rocks at the man, who deflected it, Y/n was hurt and had teary eyes, she was in pain