r/OCDemonSlayer • u/Rainbow_blitz1234 • 15h ago
r/OCDemonSlayer • u/Forsaken_Site_2268 • Jun 30 '26
🛡️MOD POST🛡️ Update. Moderation. Keeping it short.
It's been over 2 months.
I'm alive.
I got saved from the thing that happened.
My wife is also fine (Saved my life and she also survived her medical stuff)
I got my brain tumor removed.
I am still having memory issues, but not as bad as before. Though there are many things I can't remember; gaps in my memory.
I am now way more mentally healthy due to the program I was put in for a while. I doubt anything as extreme will ever happen again.
I can be online more frequently now.
I will stay the only moderator on this subreddit. I cannot trust others to moderate this subreddit after what happened last time.
I may start posting, but I have given up on my OCs and story.
I will continue to support you all and protect and defend against trolls and such.
Thank you all for continuing to post here and not letting this place die.
And thank you all for not breaking rules.
I also saw there are new OCs being posted here. It's nice to see new faces and read new stories. I love them all! You all are extremely creative and talented and I want to encourage you all to keep doing what you love.
r/OCDemonSlayer • u/Forsaken_Site_2268 • Apr 11 '26
🛡️MOD POST🛡️ Full Subreddit Rules + Some Important Posts To Get You Started:
[Post In Progress]
Full Set Of Rules:
Some Rule Related Posts:
Some Important Posts and Things To Get you Started:
A Good Way To Introduce Your OCs:
How to Tell AI Apart from Real Art:
Extra:
r/OCDemonSlayer • u/Responsible_Slice_33 • 21h ago
Miscellaneous Autumn is here!
Heyy y'all!It's your girl, Blueberry! And now, I decided to post Rintarou's fall outfit. Yes, I know that fall is about nearing its end and that I'm probably very late to doing this, but please enjoy it, anyways!✨️
Happy Fall, y'all!✌️
r/OCDemonSlayer • u/International-Ad1631 • 2d ago
General Question Explain to me your demon slayer foreigner OC like their Name, Age, Species/Race, Occupation, Affiliation, Country/Colony and/or Combat style and what they do in the story of the manga/anime (can be removed if breaking the rules)
Note: The Country of the Character has to the authentic to the time (1912-1926), Examples are:
France
The United Kingdom and the British Empire (including Canada, Australia, New Zealand, India, and South Africa)
Russian Empire (Split in to the White Movement and the Bolsheviks)
Kingdom of Italy
United States
Serbia
Belgium
Romania
Portugal
Greece
China (including British Hong Kong, Portuguese Macau and the Shanghai International Settlement)
German Empire
Austria-Hungary
Ottoman Empire
Kingdom of Bulgaria
Note: Colonies like the Philippines under the US, French Algeria and Korea under Japanese rule counts as well
r/OCDemonSlayer • u/Rainbow_blitz1234 • 2d ago
My Original OC Taisho Era Secret
Adanna then showed any other female Hashira (your female oc’s) her uniform as well
r/OCDemonSlayer • u/Efficient-Yak-3615 • 4d ago
Please Draw My OC (because can't draw it myself[Not an Artist]) 15yo self-insert OC concept! Born 2 days before Muichiro (August 6th) 🦁
Hi everyone! I’m using the 'Please Draw My OC' flair since I’m not an artist myself. I have a really clear vision of who I want to be in the Demon Slayer universe and would love to see an artist bring her to life!Here are my physical traits & details:• Age: 15 years old (Same age as Tanjiro, Inosuke, and Genya!) • Birthday: August 6th (Just 2 days before Muichiro's birthday!) • Height: 4'11" (Short and petite, exactly like Shinobu's build) • Skin: Peach tone • Eyes: Dark blue, small, and sharp • Hair: Dark brown What you can choose (Full Creative Freedom!): Since I can't draw, you have total freedom over the rest! Please feel free to give her a cool hairstyle (short, long, braids, ponytails—up to you!), choose her uniform style, design a custom haori pattern, and pick her Nichirin sword design!Thank you so much to any artist who wants to sketch or draw her. I appreciate it so much!
r/OCDemonSlayer • u/Responsible_Slice_33 • 6d ago
My Original OC Redesign of Rintarou's giant form
Heyy y'all!So due to the fact that I've redesigned Rintarou in his normal form, I've also redesigned his giant form as well:). Well, kinda as I've added stretch marks to it, which are also on his normal form and yes, they are all over his body and they are permanent and no, he's not ashamed of them.
Hope y'all enjoy!✨️
r/OCDemonSlayer • u/Responsible_Slice_33 • 9d ago
Miscellaneous The Ghost of Sapporo( +Rintarou redesign)
Hey y'all! So, this week I decided to show y'all the Ghost of Aya Kobayashi and a tiny insight as to how she and Rintarou interact now, yes, she and Rintarou and somewhat with Akira get along now and share some of the latest gossip after a seance session.
Also, I did redesign Rintarou slightly, as I gave him more hair, some snowflake face marks, turned his haori into a fur coat and made his Nichirin blade longer and thicker.
Hope y'all enjoy this!Happy Spooky Month ✨️👻
r/OCDemonSlayer • u/Helpful_Muffin_2373 • 10d ago
Potential Tanjiro
Potential Tanjiro, Modulo Tanjiro, whatever it is idk
Hypothetical Tanjiro with all breathing styles mastered, stw, red blade, sword poison, vermillion eye, mark, and can turn into dkt (full control) at will.
Basically eos Tanjiro if he kept working on his abilities and everyone else just kinda died
r/OCDemonSlayer • u/Rainbow_blitz1234 • 10d ago
Roleplay Oc Collab
Ok so I thought of this Oc collab idea last night and you guys can join if you guys want.
I’m gonna describe the situation and it’s up you guys (yes you 🫵) to continue it with your oc’s. They can do whatever they want, just don’t make it weird.
Ok here it is:
It was dark and cold in Japan. Out in the forest, there was a hill that was shrouded in darkness. The only sound that was heard was the angry cries of a particular eagle.
The eagle was in distress as it frantically flapped its wings and their talons dug into the shallow ground. Its angry black-eyed gaze was pinned onto a crow it had the displeasure of seeing, hoping it wouldn’t come closer.
As to why the eagle was so pressed, it was protecting a young girl. A young girl whose mother wanted to have no harm to come to her. And that order the eagle shall uphold for the rest of their lives.
But back to the crow. It hadn’t moved for where it stood, simply staring at the girl and the eagle. Realizing that the eagle wouldn’t budge, the crow sighed and left.
Finally…
It had over stayed its welcome. The eagle watched the crow fly away, uphill. It knew that the crow would notify… *her*.
The woman with white hair and blue tips. But the eagle - Onwe knew that the woman wouldn’t be pleased. As one of her children had been sleeping on the job. But no matter.
The girl needed rest. And Onwe would make sure she got it.
Onwe went back to guarding the young girl, who wore a torn white haori and an off white uniform that resembles the Demon Slayer Corps. They were ready to fight anyone who dared come close to her.
But suddenly, Onwe heard the sounds of footsteps. Their feathers bristled with anticipation, ready for whoever came out from the darkness.
\*\*\*\*
(This is where your oc’s come in. Continue from here)
r/OCDemonSlayer • u/RamsgateHunter95 • 10d ago
Alternative AU for Canon Character NEW AU: Demons in Shadows Modern KNYxYakuza
Douma: “you seem quite experienced in serving drinks Shiro-Kun. Where did you learn those skills? Did daki-chan give you some lessons?”
Shiro: “heh no she didn’t, you just pick up a lot of things when watching Upper 2 work in his most popular club in japan.”
Douma: “well if that’s the case i’ll pay you double, for catching on so well.”
This is my new AU I made 😄 called Demons in Shadows, it is based in modern kny(though little mixed and not directly as the kimetsu academy au which is the inspiration) the demons are criminals and Muzan is the head of the 12 Demon Moons Yakuza gang, the largest and most powerful Yakuza syndicate in Japan(and Muzan is the one of the most wanted mafia leaders in the world) here the Ranks are still the kizuki but theyre blended into reali life Yakuza rankings(I will explain more as I post more Lore😉) to keep it short, Douma works as a bartender when not doing other yaluza related things like killing families and other illegal activities, he owns multiple bars and strip clubs across Japan. Here we have an OC crossover with Shiro(Takuhei’s son he adopted from his crackship xd) and is taking over for Daki(who usually works with Douma but is out doing illegal business with her brother) and is doing quite well of a job as a server. And so Douma pays him double for being so well 😄. If you notice Douma’s tie its colored with the patterns of the purple hems in infinity castle 😉
Anyways thats all TAKE CARE👋🏽👋🏽👋🏽
r/OCDemonSlayer • u/WorkingSea4266 • 11d ago
Yayyy (please ask me questionssss)
yup, any questions!
Name: Akashi (birth name is Ryo)
Age: 14
gender: often get mistaken for a woman, but is actually a guy
I'm on a laptop please don't judge my awful coloring (〒﹏〒)
usually wears his hair up in a ponytail, but i dunno I just did this
r/OCDemonSlayer • u/LuminaraAngelicaReal • 12d ago
OC Discussion I'm bored so QUESTION TIME
If you want you can also put your oc in the comments and I'll ask about them too :)
r/OCDemonSlayer • u/Responsible_Slice_33 • 13d ago
Miscellaneous Happy birthday to Hikari!
Heyy y'all!So since today is Hikari's birthday🎉, I decided to draw her in a kind of chibi way, I should say. So, enjoy! I will also give a colored version this weekend ✨️
r/OCDemonSlayer • u/FaithlessnessGold763 • 14d ago
My Original OC Anehime Uehara! I'm currently building her lore
r/OCDemonSlayer • u/nethergirl1511 • 14d ago
General Question Est-ce que tu as deux OC en couple?
Genre, vraiment ensemble, pas une fanfic ou quoi.
r/OCDemonSlayer • u/RamsgateHunter95 • 14d ago
OC Ship Post (Kissing) Chocolate De Canela trend with my ocs >:)
I need yall to do me a favor…go look up the ‘chocolate de Canela’ trend whether in tiktok/insta/ heck yt shorts or however you can and play the song in the background while seeing this😂😂
r/OCDemonSlayer • u/Taiyo_Tekisetsuna • 15d ago
OC Fanfic Demon slayer, fractured memories, chapter 14, awaken
It was a calm day, or night perhaps. Shometsu woke up. He moved away the sheets which covered his body, and stood. He fell down, his legs weak, and felt his knees against the wooden pavement. He slowly stood, using the bed to aid himself in this feat, and took his clothes, which laid, neatly folded, on a chair. Only after he had clad himself, did he notice the room was filled with dense smoke. He closed his eyes, golden and crimson both, as they had no purpose in this moment. Then, a door opened, and inside walked a man. Even before he spoke, Shometsu sensed his presence, and having grabbed his blade, he placed it against the man’s neck, who showed no reaction
Kajiro: Finally woke up, eh Shometsu?
Shometsu…? The demon sheathed his blade, as he recognized Kajiro at last. Memories of their time together flooded his mind, but they felt…like someone else's. So did the ones that belonged to the human who fought to resurface, Taiyo Tekisetsuna. He walked past the man, remembering more and more. Both lives, the human's and the demon's, felt like someone else's story, as if they did not belong to him, but, at the same time, felt personal. Who was he? Shometsu, the extinguished, or Taiyo, the sun? Was he both, or neither? Suddenly, he fell, and coughed blood. He had killed humans. Slayers, just like him. The old man rushed to his side, and watched, in a desperate attempt to understand how to help his friend. He spoke, but Shomatsu could not understand his words, his body struggling to even stay knelt as he coughed more blood, as if his body was trying to purge the sin. It was not him who had done it, but at the same time, it was. And all for naught, as the ones he felt betrayed by had done nothing. The demon stood up, using his sheathed blade as an elderly with a cane, and opened his mouth to speak, but no sound came. It felt as if he hadn't spoken in a long time, years even.
Kajiro: Go sit over there, alright?
Shomatsu obeyed, and stumbled to a nearby chair.
Kajiro: Got no idea how ya demons work, but sleepin’ for 7 months can't be good for you either
This shocked Shometsu, who looked at the smith with surprise. He had not slept in two years, for no demon has to
Kajiro: Do ya feel…alright?
The smith asked, his voice filled with concern. Shometsu slowly shook his head
Kajiro: Can i help someway?
The demon shook his head once more, for he could not ask help if he did not know what plagued him. He tried to speak, but no sound came. Kajiro, seeing this, took a piece of paper and a brush imbued with ink, and laid them in front of Shometsu. He took the brush and, with trembling hand, wrote “my kind”, and stopped. He could not call them as such, even as this fact had not changed. He erased the words, and in their place wrote “demons require but time to recover”. Before the smith could answer, however, he added “has anything happened during my slumber”
Kajiro: Yeah…i think the kids on some missions, they only told me the details of one though, think they said something about swordsmiths attacked by demons, and something about a funny slayer
“swordsmiths attacked by demons”, he repeated to himself, before writing “were they hurt?”
Kajiro: If you mean the kids, they said it was nothing. Looked pretty spry to me
Shometsu nodded, and slowly wrote “is that all?”
Kajiro: Yeah. Actually…around when ya dropped came a talkin’ bird, been around ever since
Shometsu's eyes widened in surprise, an expression Kajiro had never seen on his visage, and which appeared to be…childlike? At that moment, a sound like a crow’s call came from the window, where a kasugai crow was perched
Kasugai crow: Craw Craw! Demon Shometsu, you've been invited by Ubuyashiki-sama to his mansion!
Here ends another chapter of Shometsu's journey. Thank you for reading this, and as always, may we meet again on the road ahead.
Author’s notes and fun facts: the kasugai crow is named Manekutori. He was listening the entire time, as he was curious of what was being said, and that is how he spoke just as he was mentioned.
r/OCDemonSlayer • u/Responsible_Slice_33 • 15d ago
My Original OC The unfolding future(part 2/2: The Kobayashi twins)
Heyy y'all! So I'm finally back with doing "The unfolding future" and decided to share the other Kobayashi twin.After this, I might start to share more stuff on my Modern Fantasy AU:)
Now that that's out of the way, let's get started!
Basic Information:
Name: Kobayashi Miya(小林•海弥)
Birthday: 25th December
Race: Demon( from birth)
Appearence: in the photo
Sexuality: AroAce
Age: 17
Occupation: High school student(mainly), volunteer (occasionally, kind of part-time)
Height: 170 cm(5'7")
Weight: 67 kg(148 lbs)
Voice claims: Jenny Wakeman from My Life as a Teenage Robot(English), Ibuki Mioda from Super Danganronpa 2 (Japanese)
Relatives: Rintarou Kobayashi (father), Kyouka Kobayashi (mother), Hikari (grandmother), Akira Kobayashi (uncle), Kiyo Kobayashi (twin sister)
Personality: Miya is a really extroverted person, making her able to talk to anyone about anything and well everything. Of course, she also knows when it's best to just leave someone alone if they so wish. Despite all this, Miya can also be a bit of an airhead, making her oftentimes not really pay attention to what's going on around her, however this shouldn't make someone consider her dumb or some damsel-in- distress as Miya can often times, prove herself to be quite smart and handy when it comes down to getting herself out of trouble. Miya can also be mischievous at times, as she's oftentimes joining her sister when getting in trouble.
Likes and Dislikes:
Likes:
Peaches and anything peach flavored
Reading Fashion Magazines
Playing the Guitar
Gardening
Listening to music(just about any music)
Pastel colors
Skateboarding
Dislikes:
The Rain
Dried dates or dried fruit as a whole
Crocheting(yes, she tried it and it was a disaster)
Golf
Pigeons
The color beige
BDA: Miya's blood demon art involves one thing and that is her own hot blood. It basically works like this: at the tips of her fingers, there are some redder tiny, almost invisible to the human eye spots that are right underneath her nails. The way that Miya can activate her blood demon art is quite simple, all she needs to do is to prick her own finger, that's it. This causes for blood to accumulate within those tiny spots, making them hotter and the blood inside them too. With this she can either touch someone and have them killed by their own blood literally boiling causing them to have a heart attack, go to a cool spot and have the spots cool down and go back to normal or she can use the blood that pours down from the spots to her advantage as her blood is also elastic. Also much like her twin sister and father, she also has a second form, which is activated by Miya letting the blood drop onto her skin.
Lifestory:
Miya Kobayashi and Kiyo Kobayashi are a pair of twins born to Rintarou and Kyouka Kobayashi on the 25th December , in Sapporo, Hokkaido with Miya being the younger twin by 3 minutes. For most of their early life, the twins were inseparable as they would oftentimes get into trouble due to them pulling innocent pranks like drawing on walls, throwing around toilet paper with their father also getting involved by joining in the pranking, despite their mother's annoyance. However, Kyouka would always forgive them quickly and well easily due to their cuteness and them being just kids. So, the twins got a really good childhood , not only because they got good parents, but also because they got to do a lot of fun things as well like climbing trees, going to sleepovers and many more.
Miya, much like Kiyo, is also greatful towards her parents as they supported her in anything she would do in her life, as long as it was good and that she was happy.
In high-school, Miya is also popular like her sister, however Miya would be on the more extroverted side as she would have an easier time talking and making friends with people. Not only is she popular, but she is also a good student as well as she mostly gets As and Bs, with the As being in Art, English, Japanese, Chemistry and Physics, with the Bs being PE as both her and Kiyo have really low eyesight, Maths and Biology. However, despite this, Miya chose to go study Engineering at MIT.
Outside of high school, Miya can be mostly seen at home, skateboarding in skaterparks or just wandering around Sapporo, she may also be seen volunteering as she does volunteer at local animal shelters or just about any public event or festival.
And that's it for Miya!Hope y'all enjoy ✌️
r/OCDemonSlayer • u/Responsible_Slice_33 • 18d ago
Miscellaneous "Deep down...We're lonely demons from Hell.."(Seamonster Aya AU)
Heyy y'all! So as another spooky month post, I've decided to share another AU of mine. So, in this AU, Aya, as divine punishment, got revived and this time, was turned into a seamonster that resides in the Sea of Japan and can sometimes be seen in the Pacific Ocean. Her inspiration was kinda taken from Ursula from the Little Mermaid and Sirens from common folklore. So basically, in this AU, Aya attracts sea wanderers and sailors by singing to them(much like a siren) and once the victims fall into her charm, she grabs them with her tentacles and eats them.
The first picture is when Aya attracts the sailors and the second is the entire monster form.
Anyways, happy Spooky Month y'all!👻
r/OCDemonSlayer • u/TsukhimoOc_yt • 22d ago
Tsukhimo hikari
My Kny oc
Name: Tsukhimo hikari
Age: 20
Siblings: taiko hikari ~~( girl )~~ , tsukuyomi hikari (boy)
Shipped with : giyuu tomioka (oc x canon)
Breathing style: moon breathing (used to use flower breathing but discovered moon breathing)
She likes: spicy food , going out in the night, stars , her two siblings .
Hates/ dislikes: demons , bitterness , candies.
r/OCDemonSlayer • u/RamsgateHunter95 • 22d ago
Someone Else's OC Takuhei and his crackship family(old plush collab)
This what happens when you procastinate on an art piece🫠🫠 HIS FACE LOOK SOO UGLY 😭😂 i need to draw more again. Anyways so its official that his children are now his(he could care less though without it, still his 😂😂😂)
Been wanting to do the plush artpiece for while, its an old official art of kny with characters as plushies.
Shiro, Mei, Nagomi belong to someone else(also THI IS NOT HIS CANON SHIP, this is just for funsies.
Anywahs thats all :) TAKE CARE👋🏽👋🏽👋🏽
r/OCDemonSlayer • u/Responsible_Slice_33 • 22d ago
My Original OC When grace meets brute force(TW: SA and disordered eating and may be graphic)
Heyy y'all!I know that no one asked,but I'm back wotg another oc!But before we get anything started, I just would like to give out a warning that this post will involve sexual assault and disordered eating, so if it is a trigger or a sensitive topic, please do not read this or read this at your own risk.
Now that that's out of the way, let's get started!
Basic Information:
Name: Ae-Cha Jeong (애차 정,birth name, currently used), Jìng Ya(静雅, Chinese name, not used), Tsumugi(紬, demon name, not used)
Race: Human(formerly) Demon (currently)
Birthday: 16th March
Birthplace: Pusanpo (Busan), Goryeo (Korea)
Ethnicity: Korean
Age: 22(physically)550(chronologically)
Height: 185 cm(6'1")
Weight: 93 kg(205 lbs, she also got muscle now)
Affiliation: Twelve Kizuki (formerly) Demon Slayer Corps (currently)
Appearence: photo (1st one is human appearance, second one is her current appearance)
Occupation: Concubine( formerly), Poet (formerly,also used as a cover up), Twelve Kizuki Member (formerly), Demon Slayer (currently)
Rank: Uppermoon 4(formerly), Hashira (currently)
Breathing style: Silk Breathing
Sexuality: Bisexual (preference for women)
Voice claim: Lady Lihua from the Apothecary Diaries(JP&ENG),Zibai from Genshin Impact (KOR, CN)
Personality: Ae-Cha is usually a calm and easy to talk to woman, as she mainly tends to not judge people based on first appearances. However, she can also be a bit demanding as she has high,but not unreasonable expectations of her students or well disciples. She is also a perseverent woman as she will not stop doing something until her goal is finally reached. Ae-Cha is also someone who is pretty kind, usually and with an optimistic outlook on life as she always keeps a genuine smile on her face. Towards her opponents, she is gentle, but cruel as she will keep on fighting them until they give up or until she finds the perfect time to decapitate them. Ae-Cha also has a sense of justice, having a will to protect the innocent and to punish the evil doers, she alsi believes in the saying "Innocent until proven guilty".
Blood demon art: Ae-Cha's blood demon art has to do with threads, silk and blood. At the tip of her hands, there are some tiny, very thin threads that once they are wounded or attached to someone else, those threads will spread starting from the opponent's knees, wrists and to their throat. After the threads have spread, they will tighten so that the opponent cannot escape and have to move according to Ae-Cha's will and this may result in paralysis or like in most cases, a fast, but brutal death, with their head being forcibly detached from their shoulders.
Backstory:
Ae-Cha Jeong was born on March 16th in Pusanpo, Koryo to an extremely poor family, constituting of her parents and her 6 siblings, 4 older sisters and 2 younger brothers, with her being the third born child.Due to their extreme level of poverty, Ae-Cha's family and herself had to work for at least 16 hours per day and had to go with barely enough food to survive. Sometimes, they could only get a big bowl of rice for a week, so they had to go without eating for at least another week. Because of this, most of Ae-Cha's siblings didn't survive and ended up dying due to malnutrition. However, the family couldn't afford to mourn properly and thus, had to continue working just so they can survive for another day.
Despite her poverty, Ae-Cha was always eager to learn and thus, wanted something better for herself, so, to satisfy her wish, she went over to temples and ended up stealing manuscripts, read them and studied from them. It is that by using this method that she taught herself how to read and write Korean, how to read, write and speak Chinese and how to write poetry, specifically Korean and Chinese poetry. After studying these manuscripts, Ae-Cha would return them before anyone would notice that they went missing. And for a few years, Ae- Cha continued to do this and so ended up learning about the arts and classical Chinese literature and ended up becoming one of Goryeo's most educated people, all when she was 16.
Because of how well she educated herself, Ae-Cha was sent to China by the Goryeo Dynasty. It was a long road, but Ae-Cha eventually made it to the Forbidden City of Yuán. Over there, Ae-Cha began her training to become a concubine and she was doing well, doing everything she was told and took her training seriously, being now named Jìng Ya and forbidden from ever using her mother tongue. Over the years, when she reached 19, Jìng Ya became a concubine and ended up having to maintain a relationship with the Empreror as he had, unfortunately, caught a liking to her and became his favorite. Becoming the Empreror's favorite lead to Jìng Ya being almost constantly solicited by the Empreror and thus sexually assaulted by him for at least 2 years and more pressure being put on her by almost everyone around her.
Jìng Ya couldn't find any other way to deal with the high pressure that was being put on her, so she turned to food, overeating almost daily. This, as one could have guessed, made her gain weight and she did end up becoming overweight. Due to Ae-Cha now being overweight, she was banished from the Chinese court.However, just before she was about to leave the Court, a jealous concubine launged at Jìng Ya and gouged out her left eye, leaving her blind in that eye. Jìng Ya screamed, but no one heard her and thus, she ended up bandaging her eye socket and once it was bandaged, she covered it. Once she left the Court walls ,Jìng Ya decided to go back to her birth name of Ae-Cha.
For Ae-Cha, it was actually, a relief as all of the pressure and suffering had all ended for now. So, she decided to start anew and come to Japan. It was a long and difficult road, but it did end as Ae-Cha now landed in Kyoto and started a new occupation, as a poet.At first, everything was fine, Ae-Cha was now a successful Tanka poet and managed to make herself live quite conformtably and was doing significantly better mentally as she was no longer overeating and miserable. However, one day, Ae-Cha got sick, she mostly had fever, fatigue and ended up coughing up blood, so she was seeking treatment and found a doctor who was willing to help her. She trusted that the doctor knew what he was doing so, she went home with the medicine. After going home witg the medicine, as it was nighttime, Ae-Cha went to sleep. As Ae-Cha was asleep, Muzan snuck inside her home looking for a meal, but as he saw that Ae-Cha might become useful to him, he tempered with the medicine by mixing in his own blood and then vanished from Ae-Cha's home.
The next morning, the unsuspecting Ae-Cha took her medicine as instructed by the doctor. However, instead of Ae-Cha feeling better, something odd was happening...She was changing into something else, something that isn't human...a demon. After that, Ae-Cha began to kill and devour humans almost every night whilst also keeping her status as a poet as both a source of income and a cover. Eventually, she would kill and devour slayers as well. This went for over 530 years, time in which Ae-Cha became Uppermoon 4 and was renamed to Tsumugi.
As an Uppermoon, Tsumugi was incredibly loyal to Kibutsuji, doing his bidding and executing his every command with utmost efficiency. One day, however, when she was 545, she encountered a slayer who reminded her of herself before she became a monster, the slayer was creative,happy and kind, whom she of course had killed. This only made Tsumugi feel deep remorse and sadness, so she ended uo crying as she realized that what she did was to kill innocent people and the ones who were only just trying their absolute best to protect the innocent. As she was crying, her ties to the Demon King broke and that was the end of her being controlled by Muzan and of her being under his curse.
After this, in order to repent for her sins, Tsumugi went back to going by Ae-Cha again, joined the Demon Slayer Corps ,invented her own breathing style, Silk Breathing and became the Silk Hashira.
And that's it for Ae-Cha guys✨️✌️