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1
The Chessmaster's Day in the Dark 执棋者日黑
[The opening is rather depressing, because it takes time to develop the characters. This is my first time writing, so there may be a lot of bugs. If that bothers you, feel free to skip it. Also, the ending is HE! Guaranteed HE, so don’t worry, dears! Finally, OOC warning: I’ll do my best to portray Yoriichi and Genya as I see them, which may differ from your interpretations. Yoriichi is rather inhuman at first, closer to the Rei type. The setup is that Genya gradually socializes Yoriichi and tea
338Reads8.8Score11314d adds
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- 2 Why Does Upper Moon One Keep Ringing? 上弦一为什么一直响 Dark Sun. [The score has just been released, and it may still go up] After eight hundred years of punishment in hell, Upper Rank One finally completed his sentence, but refused to be reincarnated. King Yama was at a loss. How could a demon still be clinging to an obsession after eight hundred years? Looking at the stubborn, silent demon before him, King Yama stroked his chin. Then, for some inexplicable reason, Kokushibo was tossed back into the mortal world. Back to his childhood, when he and T 10.4kReads9.6Score1.2k14d adds
- 3 Working Hard to Reach a Happy Ending with My Older Brother 努力和兄长达成幸福结局中 Yoriichi and Kokushibo, both reborn [The rating just opened, so it’ll go up] Michikatsu with Kokushibo’s memories × the Demon King Yoriichi with the memories of both lives Warring States era + Taisho era Three lifetimes, two sets of memories, and a sun and moon that will never set. Tsugikuni Michikatsu is reborn with memories of his previous life as a demon. Looking at his innocent six-year-old twin brother, he resolves to break free of fate and stop living a life ruled by hatred and jealousy. B 620Reads8.9Score13714d adds
- 4 Demon Slayer: My Younger Brother Loves Me Too Much, What Should I Do? 鬼灭日黑:弟弟太爱我了怎么办? (The rating will rise once it’s been up for a while!) [Sun and Moon] [Yoriichi x Michikatsu] [No transmigration, canon character designs] The Warring States era is rife with chaos, and demons stalk the land. He, the creator of Sun Breathing and the “child of God” revered by all, can see through the world and perceive all things, yet he alone cannot see through the abyss in that man’s eyes. He, a genius of Moon Breathing, spends his life chasing the sun’s shadow, only to accept the Demon King’s b 2.9kReads8.3Score52014d adds
- 5 Upper Moon One's Second Run, but with PTSD 上弦一的二周目但PTSD [Demon Slayer: Blackened Yoriichi] After Kokushibo died, he endured a century of torment in hell before being reborn at the age of seven, back at the beginning of everything. He didn’t want to repeat his past mistakes, but whenever Yoriichi came near, he saw the reflection of six eyes: his own, belonging to Kokushibo, Upper Rank One. “Do you hate me, Brother?” Yoriichi took hold of the hand gripping the sword. Michikatsu wanted to pull away, yet craved the warmth. He was the only one who knew th 111Reads8.4Score—14d adds
- 6 Dark Sun: My Younger Brother in His Second Life Loves Me Too Much 日黑:二周目的弟弟太爱我了 A new work is out! You can read my stories on Tomato Novel. I hope you’ll enjoy them. Your support is what keeps me writing, and I’ll do my best to tell every story well! 615Reads8.9Score13714d adds
- 7 Lord Kokushibo, Is That You and Your Brother Over There? 黑死牟阁下,对面是你弟和你? *Based on the original Demon Slayer, with a Yoriichi/Kokushibo pairing. Please mind the tags. The rating's just been added, so it'll go up, meow. Yoriichi Tsugikuni opened his eyes and found, to his shock, that he had transmigrated to an era called Taisho. He remembered being with his older brother before he transmigrated. Where was his brother? Had he transmigrated too? Worried, Yoriichi Tsugikuni set out to find his brother. But before he could take more than a couple of steps, he found him. 758Reads7.3Score13314d adds
- 8 The Moon of Tsugikuni Yoriichi Never Sets 继国缘一的月亮不会西沉 (The rating just opened, so it’ll rise later.) [Key tags] Dark themes | Green-tea little bear | Growing-up romance | Succubus older brother | Forced imprisonment with a twist | Sweet and angsty | HE | Two Yoriichis, but they’re the same person (the main story is complete, so read with confidence) In hell, Iwa Katsumi saw a face that made him sick. He quietly left, but Kokushibo Yoriichi held him tightly. The child of a god wept, his tears scorching the demon’s lungs. It was as though he were 1.2kReads8.7Score23314d adds
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Demon Slayer: The Legendary Lady Tsugikuni 日黑:传闻中的继国夫人
[Demon Slayer fan fiction] [Yoriichi x Kokushibo] (The rating has just been posted and will rise) That Lord of the Sun, the invincible child of the gods, actually had a beloved wife. Unfortunately, Lord Yoriichi would not let anyone meet his wife, Lady Tsugikuni. Only at night would the sound of roaring come from his courtyard. It was said that the lady had quite a temper. At last, unable to hold back his curiosity, one Corps member sneaked into the courtyard while Lord Yoriichi was away. In the
2.9kReads8.8Score50714d adds
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[Sun-Dark] Why Did a Demon Become the Moon Pillar? 【日黑】明明是鬼为什么成了月柱
· Demon Slayer: Kokushibo/Yoriichi fan fiction, Tsugikuni brothers · A story about someone who keeps calling you my god while offending the gods · Muzan and Michikatsu are still best girlfriends Kokushibo is reborn from the flames of hell, returning to a time before it all began. He resolves to sever every last tie of fate and stop chasing that sun. But the threads of destiny have already twisted into an inescapable knot. “Brother, do you remember? When you were seven, you had a high fever for
182Reads—Score—14d adds
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Demon Slayer: If the Gods Should Turn Their Gaze Upon Us 鬼灭日黑:如若神明垂眸
[Demon Slayer] [Yoriichi x Sanemi] [Dual Transmigration] The Older Brother and Younger Brother Transmigrate to the Taisho Era: An If Story First, the older brother from the Taisho era transmigrates back to the Sengoku era, into the body of his newly demonized self. Then he runs into his younger brother in the Sengoku era. Due to the butterfly effect, the two transmigrate to the Taisho era once more. The novel includes personal indulgences and Demon Slayer BG pairings such as Giyu and Shinobu, an
106Reads—Score2414d adds
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Demon Slayer: Reborn into Everyday Life, Starting with a Memory Trigger 鬼灭:重生日常,从触发记忆开始
[The rating just came out, so let's leave it at that...] Modern AU + Taisho-era storyline (both are main storylines). The school counselor is here (?). ↓ Here's the synopsis!!! There are secondary couples, so beware if that's not your thing!!!!! Very out of character. I wrote this simply because I wanted to read it. Yoriichi/Michikatsu, Douma/Kotoha, Obanai/Mitsuri, Giyu/Shinobu (these are the couples featured). Basically... everyone is reincarnated, and most of them retain their memories. The m
543Reads8.2Score10214d adds
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- 13 Elder Brother, You've Been Tainted 兄长,你脏了 [Demon Slayer fanfic + Kokushibo x Yoriichi + brotherly bond + forced redemption] Michikatsu (frost covering his body, hatred blazing): “Yoriichi Tsugikuni... I hate you!” Yoriichi: “Hate me if you want. Warm up first. Then you’ll have the strength to take your revenge on me.” 1.3kReads8.4Score20014d adds
- 14 [Daylight Black] Demon Slayer Academy: Come Take My Little Brother Away 【日黑】鬼灭学院:快把我弟带走 Sanemi x Obanai pairing Set at Demon Slayer Academy, with lots of original headcanons. To claim absolute control of the academy, its chairman, Kagaya Ubuyashiki, and board member Muzan Kibutsuji made a wager. After one year, whichever department, Academics or Competitions, had the better performance metrics would decide the academy's future. Kokushibo was appointed head of the Competitions Department in a moment of crisis. And his ever-present twin younger brother somehow became a math teacher, 1.1kReads8.4Score16114d adds
- 15 It's Hard to Explain, but My Little Brother Turned into a Ghost 很难跟你解释但我弟变鬼了 Yoriichi and Michikatsu are endgame, no switching or breaking them up. There are so few stories about them that I had to write one myself. This is purely because I love this pairing. Yoriichi is reborn and turned into a demon by Muzan. The two brothers embark on a domestic make-believe adventure (not really). They will travel to the Taisho era. I like happy endings, so I don't like killing characters. 454Reads6.9Score8614d adds
- 16 Dark Sun: Sun and Moon Shine Together 日黑:日月同辉 Kokushibo X Yoriichi Tsugikuni “I hate the moon hanging high in the sky, shining on everyone but me.” “I hate the blazing sun for shining on me when I’m powerless to protect him.” After being unexpectedly resurrected, Yoriichi Tsugikuni becomes something neither human nor demon. He can’t die or grow old, but unlike a demon, he isn’t afraid of sunlight. He also can’t regenerate and still needs to eat… But as long as he can stay by his big brother’s side, that’s enough. A stone-faced, death-defyin 572Reads8.7Score10914d adds
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Demon Slayer: I Am Mad for You 鬼灭,吾为君狂之
[Sun-Demon Slayer] [Rule Horror] [Hardcore plot-driven] (No transmigration, no alternate identities, faithful to the original!) Once, we were two crabapple branches sharing the same courtyard, one bathed in morning light, the other touched by frost. For twelve years, I hid my blade from the world, only to reunite with you in a bloodstained robe when danger struck. Proud to the bone, I would never accept being second to anyone. Yet my lovestruck heart only ever wished to yield to you. Neither evi
177Reads—Score10314d adds
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- 18 Demon Slayer: How Michikatsu Got Surrounded by Yoriichis 鬼灭关于严胜被缘一们包围这件事 [Love triangle showdown + younger brother characters + multiple rivals + Western fantasy adventure + Demon Slayer fanfiction + Kokushibo and Yoriichi + lighthearted + comedy] One moment, Yansheng is basking in the sun in the sea. The next, humans have kidnapped him. Once he gets a good look, he wonders which fool dared lay a hand on him... ? Why is it Yoriichi! Wait, why is he human! Tsugikuni Yansheng is the strongest warrior in a thousand years of the merfolk, and the perfect older brother in 1.3kReads8.7Score18114d adds
- 19 Demon Slayer: Lord Ming, Still Searching for His Mother Today 鬼灭:明柱大人今天也在寻母亲 [Female lead with no romance, Japan Black Moon, naturally marked with no transparent crimson blade (though she’ll train one later), growing female lead, transmigration, Japan Black Moon reborn, dual-wielding, System, apologies for OOC, Kua friend-friendly, Lei Shi] (The summary may differ a little from the story, because I want Michikatsu Tsugikuni to have more scenes and more interactions between Japan Black Moon.) Ming Tonghui transmigrated and was taken in by a man named Yoriichi Tsugikuni. H 61Reads6.9Score17214d adds
- 20 Demon Slayer: The Moon Chasing the Sun 鬼灭:追逐太阳的月亮 Michikatsu/Kokushibo pairing, with a little Obanai/Mitsuri and Doma/Kotoha Follows the original Demon Slayer story, with plenty of personal preferences and lots of OOC. [Do people go to heaven when they die? Michikatsu Tsugikuni doesn't know, but Kokushibo does. Someone like him is surely bound for hell, with Yoriichi Tsugikuni, who has always followed him around, coming along too. The not-so-normal version: What do you mean my little brother thinks I'm the Master? What do you mean I dressed as 181Reads6.7Score11314d adds
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My Lord Sun and Moon, I Want to Be With You 主日黑我想和你在一起
Demon Slayer, the Tsugikuni family. Yoriichi Tsugikuni x Michikatsu Tsugikuni. Modern AU. The modern-day brothers won't appear until I write them in, so please stop asking. The story also includes a lot of Sengoku-era scenes. You'll understand why as you read. Mainly from Yoriichi's perspective, and this is a ship!!! (Please note, reviewers: sharing a surname does not mean these two are related by blood.) There are some original elements in places, all of them in service of the plot. The story r
309Reads8.5Score11814d adds
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Demon Slayer: Michikatsu from a Parallel World Transmigrates into Demon Slayer 鬼灭:平行世界的严胜穿越了鬼灭
Michikatsu Tsugikuni, living in a modern parallel world, was looking at his phone while crossing the street when a speeding car hit him and sent him flying. He transmigrated to the world of Demon Slayer. “Hmm, where am I? Wasn’t I just hit by a car? How did I end up here in the blink of an eye?” Michikatsu stared at the snow-covered forest around him, lost in thought. He shook his head and prepared to leave this strange place, but then heard footsteps crunching in the snow behind him. “Oh, there
370Reads6.9Score11014d adds
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- 23 Upper Moon One Is Getting Stronger Today, Too 上弦一今天也在变强 Content warnings: This story leans toward a dark take on Nichirin. There are no romantic pairings, only platonic relationships and guidance. The author recommends it this month. Read with caution if that’s not your thing. The protagonist really does kill and eat people. He will not be redeemed. Although he transmigrates, this is not a body-swap or an assumed identity. He is simply one person. There is a courtesan storyline. From the day he transmigrated as Tsugikuni Iwakatsu, Yansheng knew 1.7kReads8.2Score23014d adds
- 24 Demon Slayer: Why Is Lord Kokushibo a Girl? 鬼灭:黑死牟阁下怎么是女孩子? [Gender-swap warning!!] [No fixed pairing, ship whoever you like] A young man transmigrates “by accident” into the body of Kokushibo, an Upper Rank demon, with a System in hand. He thinks he’s about to have the time of his life, only to find he’s turned into a girl?! The legendary Sun Breathing swordsman from the Sengoku era, four hundred years ago, has reappeared in the Taisho era?! To turn back into a man as soon as possible... no, to get home as soon as possible, he’s forced to complete the i 2.4kReads7.3Score34814d adds
- 25 Reborn as Upper Rank One 重生成为上弦壹 (No CP + System + transmigrated into Demon Slayer) After transmigrating as Michikatsu Tsugikuni, Sanemi can only follow the System's prompts and stick to the plot if he wants to survive. But while Sanemi (Michikatsu) dutifully stays at his post and carefully completes his missions, everyone else has gone completely out of character behind his back… There are plenty of flaws in this book that I haven't noticed, and now that it's finished, I can't fix them. It's not that the author won't make 3.8kReads9.4Score51714d adds
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A Collection of Japan-Black Fan Fiction 日黑同人合集
Mid-length fanfic. Original title: [Daily x Black], Yes, We Have a Child, completed ✓ [Daily x Black] Let This Top Guy in Chengcheng Get a Little Taste of the Cultivation World's Might, ongoing [Daily x Black] I Slay People and Ghosts for the King of Qin During the Warring States Period [Daily x Black] What Do You Mean My Younger Brother Turned Into a Ghost Too?
130Reads8.4Score—14d adds
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- 27 What If Yoriichi Could Read Minds? 假如缘一会读心 [The rating has just been posted and will rise] The sun can hear the moon's voice. Content warnings: 1. Demon Slayer fan fiction, focused on the Sun and Moon pairing. 2. The brothers will both become demons by the end. 3. There may be out-of-character moments. I can't guarantee complete faithfulness to the original. 1.5kReads8.2Score27714d adds
- 28 Why Are the Sun and Moon Pillars Always Clinging to Each Other? 日月柱大人为什么总黏在一起 My new work is out! You can find it on Tomato Novel. I hope you'll enjoy it. Your support is what motivates me to write, and I'll do my best to tell every story well! 40Reads6.8Score—14d adds
- 29 Demon Slayer: Reborn in the Warring States Era as a Married Mom of Two 鬼灭人在战国,重生已婚二孩妈 [Main story complete, ready to binge] Thanks for asking. I'm in the Warring States period, and I just got reborn. The moment Akane opened her eyes, she heard a maid crying, “Madam, wake up! The head of the family is going to kill the young master!” What familiar plot... What do you mean the younger son was born with a mark? And why is the older son named Tsugikuni Michikatsu? Wait, which Warring States period is this exactly? Σ( °△°|||)︴ Akane: “Hello, shrine? Could I get another pair of mo 221Reads7.1Score—14d adds
- 30 We’re Both Ghost Kings, So Why Can You Sunbathe?! 都是鬼王你凭什么能晒太阳! [Female-oriented] [Contains Yoriichi/Kokushibo pairing] Read with caution!!! Yan Sheng, Yuan Yi, and Yue Yan cosplay and end up in Demon Slayer. Yes, they transmigrate into Demon Slayer. Let's not get into what era it is. Yan Sheng is cosplaying as Hei Si Mou, Yue Yan as the Demon King Wu Can, and Yuan Yi as Yuan Yi, except he's demonized Yuan Yi. Yue Yan: What else is there to say? I'll be the Demon King, then. The three conjoined Demon Kings try to make it through Demon Slayer without gettin 1.3kReads8.2Score19714d adds
- 31 Demon Slayer: Reborn in the Sengoku Era, Upper Rank One Is Cried Into Being Spoiled 鬼灭:重生战国,上弦一被宠哭了 [Two male leads + Reborn redemption + Brotherly love + The villain must die + Nothing but sweetness, no angst] [Cool and proud, says one thing but means another, demon big brother × Peak-level fighter, naturally devious, brother-obsessed younger brother] After spending a thousand years working in hell, Upper Rank One, Tsugikuni Michikatsu, was finally kicked back into the world of the living by King Yama. He was reborn at the age of seven. Beside him was his adorable younger brother, Yoriichi Ts 952Reads8.2Score17614d adds
- 32 Demon Slayer: After Being Reborn, My Divine Younger Brother Went Mad 鬼灭:重生后神明弟弟疯了 Boys’ love leads | Both reborn on the same day | Intense push and pull | Yandere younger man | Fated redemption | Beating the hell out of Muzan | Major OOC warning In their previous lives, one was the lofty Upper Rank One, and the other was a twilight god who died on his feet. After four hundred years of fated rivalry, they perish together. When he opens his eyes again, Tsugikuni Michikatsu is back in bed on the day he turned seven. Drenched in cold sweat, he is about to get up and change everyt 1.7kReads6.8Score32714d adds
- 33 Sunlight in the Heart of the Rock 日光入岩心 [Demon Slayer Fanfiction + Two Male Leads + Redemption + Yoriichi Is Obsessive and a Little Scheming + Michikatsu Is Somewhat Protective of His Younger Brother + Both Strong (Really?)] The Apple of the Divine Child’s Eye: This is a branch of fate that never came to pass. When the demon’s temptation came to Tsugikuni Michikatsu, he did not reach out. He never fell into darkness or became Kokushibo, never severed every bond with his younger brother with his own hands after centuries of obsession. 6Reads—Score114d adds
- 34 Can the Kamado Family Get a Happy Ending Too? 继国家也可以he吗? [Sanemi x Giyu Fanfic] [Sweet Romance] What if Yoriichi Tsugikuni had left the Tsugikuni family before he came to understand his feelings? Would things have turned out differently for them? Could they have had a happy ending? 274Reads—Score10014d adds
- 35 Daybreak IF Route: Back from Hell to Begin a New Life 日黑if线:地狱归来开启新人生 A Rihei ship fic. Apologies for any out-of-character moments. The first playthrough is mainly told from a first-person perspective and includes original characters and headcanons. If you don't want to read the first playthrough from the characters' perspectives, feel free to skip it. But the last page of Zhinao's perspective has a detail that adds to Chapter Two, so if you don't mind, you can go straight to the second playthrough. Warning! I'm not a fan of Yuanshi! But I'll give Shi a happier en 6Reads—Score214d adds
- 36 Demon Slayer: Upper Rank One Gets Fed by His Little Brother Again Today 日黑:上弦一今天也在被弟弟投喂 The pristine white shrine is a cage made just for him. Pale golden chains coil around him day and night, their other end forever held by that “god.” “Swallow.” Enichi bit his fingertip and pressed the scorching divine blood to his lips. “It’s the only way you’ll survive.” Pain, burning, and then an overwhelming rush of fullness and pleasure. Kokushibo roared through the agony. “Kill me, ” Enichi merely lowered his eyes and wiped away the tears of physical pain at the corners of his eyes. “No. Yo 46Reads8.0Score11114d adds
- 37 The Chaotic Second Life of Upper Moon One and Two 上弦壹二周目的鸡飞狗跳 Twelve Hours of the Spring Festival: The Hai Hour The moon is so gentle, the sun so blazing. [OOC Warning + Sun-Hater] Sun-hater, fully endorsed. Setting: The Sun-Hater is tragically a triplet; Kokushibo is in his third cycle, while Yoriichi Tsugikuni and Muzan are in their second. If my younger brother gets into a fight with my boss, whose side should I take? Muzan: What do you think, Kokushibo!!! Yoriichi: Big brother… (a pitiful little bear) Michikatsu: ? The day fate began anew: Yoriichi: Wh 84Reads—Score—14d adds
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Transmigrated Into Demon Slayer: I Raised the Tsugikuni Brothers 穿越鬼灭:我养大了继国兄弟
What if Michikatsu and Yoriichi had grown up in different families? They'd definitely have a happy ending. This was the idea behind this story, written purely to indulge myself. Set in the Sengoku era, the female lead transmigrates into a mother. From the start, she takes her twin sons and leaves the Tsugikuni family, raising them on her own and leaving nothing for that old bastard! This time, the brothers grow up surrounded by love. There's no misunderstanding or twisted relationship; they're t
27Reads6.6Score—14d adds
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Kokushibo Loses His Memory and Makes Everyone Think He's Lost It 黑死牟失忆创思所有人
A Demon Slayer fanfic, primarily featuring Michikatsu. Amnesia and overpowered-protagonist tropes, following the original work. Not much else to say. It's all about getting sweet and exciting! Kokushibo is struck from above by an overpowered-protagonist System and loses his memories. Guided by the System, he challenges Tsugikuni Yoriichi, the strongest person in the country, but loses. The System immediately retreats and decides that Yoriichi is a worldly master, then tells Kokushibo to become h
44Reads—Score—14d adds
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- 40 Demon Slayer: I Transmigrated and Became Kokushibo 鬼灭之刃:穿越成为黑死牟 After transmigrating as Tsugikuni Michikatsu, who had just turned into a demon, he tried every way he could think of to get home, only to be told he had to help Muzan gather the six Upper Ranks. With no other choice, he went along with it. But it wasn’t easy: besides avoiding the Demon Slayer Corps, he also had to evade Yoriichi, who was constantly searching for him... 1kReads9.1Score14414d adds
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The Brothers' Little Everyday Moments 兄弟两小日常
A Japanese Demon Slayer fanfic, focusing on the brothers’ dynamic. The first phase follows young, amnesiac Michikatsu and young Yoriichi, who remembers everything. Michikatsu gradually recovers his memories from his first life through dreams. In between, the amnesiac Michikatsu of the second life dreams of adult Yoriichi from the first life. The second phase tells the story of Michikatsu leaving the Tsugikuni family, meeting Yoriichi, who also left home after him, and joining the Demon Slayer Co
219Reads—Score11314d adds
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![[Sun-Dark] Why Did a Demon Become the Moon Pillar?](https://p3-novel.byteimg.com/novel-pic/44132deca9695cac01b2b094c23460d2~tplv-resize:120:0.jpeg)



![[Daylight Black] Demon Slayer Academy: Come Take My Little Brother Away](https://p3-novel.byteimg.com/novel-pic/fce129af30c0975500e6726938db6924~tplv-resize:120:0.jpeg)


























