[Katekyo Hitman Reborn! + Demon Slayer] I Woke Up and Was Completely Stunned

[Katekyo Hitman Reborn! + Demon Slayer] Academy AU, short chapters, with a little Monthly Girls' Nozaki-kun and Rurouni Kenshin mixed in. Expected to finish under 400,000 words.

*

My name is Baizhou Chuan Xifeng. I'm 16, about to start my first year at Namimori High, and a member of the kendo club.

My goal is to beat Mr. Urokodaki, the Namimori janitor monk, then coast through life doing nothing.

Every day, I dream.

I dream my classmates are being devoured alive by demons, their guts spilling across the ground.

A Kasugai Crow shrieks. A man wielding a giant axe has the exact same face as Mr. Himejima, my cat-loving, kindhearted homeroom teacher.

A demon's head flies high into the air.

Under the sunlight, it crumbles to ash.

*

My shy junior, Kanao, who is a year younger than me, swings her blade without hesitation, her face expressionless.

My sweet, gluttonous housemate, Miss Kanroji, doesn't even blink as she punches straight through a demon's skull with her bare hands.

*

As the mosaic-like lump on the ground writhes endlessly, I calmly think to myself and finish it off with another slash.

"Something has definitely gone wrong."

*

My name is Baizhou Chuan Xifeng. I'm 16, former Tsuguko of the Flower Hashira in the Demon Slayer Corps, and a Water Breathing swordswoman.

My goal is to kill Upper Rank Two and avenge Kanae.

Every night, I dream.

I dream my teammates are all whole and healthy, cheerfully greeting one another good morning, lining up under the Kasugai Crows' supervision, and heading to their morning classes.

Our teachers are the lively Hashira, including Kanae, who died in battle three years ago.

They teach us about "the rule of law, civilized dialogue, and rejecting violence."

*

After class, the stern Wind and Serpent Hashira walk by me, laughing as they chat. "If those students fail again, we might as well dump them on Tomioka to deal with." "Sounds good to me."

My two fellow disciples, Sabito and Makomo, who died early at the hands of demons, gather around me, each suggesting what we should have for lunch.

*

We smile in the sunlight like ordinary people.

*

Sawada Tsunayoshi thought that becoming the boss of the mafia, after dreaming as a child of becoming a giant robot or an astronaut, was the limit of "fate's cruel jokes."

That was until his frail, helpless cousin, Baizhou Chuan Xifeng, wearing a sleep-deprived, world-weary expression, beat his Rain Guardian to it and slashed down an upgraded experience point sent by the rival family.

"Water Breathing, Fourth Form: Striking Tide."

*

Yamamoto Takeshi clapped. "What a clean cut."

Sawada Tsunayoshi: "...That was a real sword, right? He got hit just now, didn't he?!"

Baizhou Chuan Xifeng: "I used the back of the blade. The back."

*

When it came time to choose her future, Baizhou Chuan Xifeng unhesitatingly applied to the police academy. With righteousness blazing in her eyes, she declared, "Scum who undermine the rule of law, I'll cut down every last one I see."

Sawada Tsunayoshi: "X-Xifeng, does the mafia c-count?"

Baizhou Chuan Xifeng: "...What do you think?"

*

With her dreams intertwining the modern era and the Taisho era, Baizhou Chuan Xifeng sometimes can't tell which side is a dream and which is reality.

Until one day, her classmate Zenitsu Agatsuma holds up a memoir of the Thunder Hashira passed down from the Taisho era and says the words "Demon Slayer Corps." Having changed the fate of many people who were supposed to die, she finally realizes...

Perhaps this nightmare that has lasted eleven years is finally... about to end.

*

Her golden finger is shared memories plus a photographic memory. Her character is an ordinary person with mediocre talent and five spiritual roots, a typical hard-working heroine who grows through effort.

✅ Travel between two timelines | ✅ Reunion in a parallel world | ✅ Foresee the future and change fate | ✅ Healing ensemble cast | ✅ Slow-burn romantic tension | ✅ Finding sweetness amid the angst

Some original endings will be changed. The Namimori and Taisho storylines are told in parallel. The main story is an ensemble focused on friendship, with no romance, though there may be romantic storylines in the extras.

The Namimori arc will run 12 chapters, followed by 11 Taisho chapters, then the story will end.

I've finished outlining every chapter. I'll try to update weekly, with 20,000-plus words per update. I'll do my best not to abandon it. Feel free to bookmark it and let the chapters pile up before reading.

And with that, thank you for joining me!

My new work is open for pre-bookmarking: "The Days I Respond to Emergencies at Lightning Speed in Shonen Manga," about a burned-out office worker over 10 years into her career. It crosses over Jujutsu Kaisen, Katekyo Hitman Reborn!, Demon Slayer, Chainsaw Man, Naruto, Bleach, and other shonen series.

I'll start writing it once this story is finished and enough people are waiting for it.

The sequel to "I Woke Up and Was Completely Dumbfounded."

*

As everyone knows, novels and comics, especially shonen manga, rarely feature laws or law enforcement.

When villains threaten to destroy the world at the drop of a hat, the protagonist gets to show off their cheat abilities and preach about ideals, the supporting cast explains the backstory and character profiles, and bystanders cry, scream, and flee. The police, meanwhile, are just part of the scenery, with no presence whatsoever.

Tragically, Baizhou Chuan Xifeng is one such exemplary people's police officer.

She belongs to the International Criminal Police Organization's Special Affairs Unit. Committed to upholding the rule of law, she cracks down equally on all the scum who harm civilians and threaten society.

Her targets tend to be traumatized, mentally ill, or eccentric antisocial criminals who delight in hurting others... except lately, the criminals (?) seem to be getting more and more fantastical.

Mafia, ninjas, Hollows, tailed beasts, demons, fiends, weapon humans, Cursed Spirits, Shinigami, Curse Users, Quincy, the Four Horsemen of the Apocalypse, a King of Curses from a thousand years ago, aliens.

...Wait, did something really weird sneak into that list?

Fantastical is an understatement. They're crossing species now, aren't they? Are those last few even human? Are aliens really our responsibility too?!

*

The emergency line won't stop ringing, and her colleagues are spinning like tops. Arrest one perp, then another. Arrest another, then another.

At the awards ceremony, the year's biggest workaholic and top performer, Baizhou Chuan Xifeng, calmly raises a complaint.

When faced with increasingly ridiculous creatures, they can only shout, "Don't underestimate the bond between us and the law!" as they charge forward with swords. In every sense, they look pretty dumb...

Their opponents can make shock waves with their bare hands and blow up an entire city... while they're still stuck in the age of cold weapons. They should at least get some better equipment, right?

The chief says he's already thought of that, then hands them a few booklets tucked inside the fire safety manuals.

"From Rookie to Jonin! A Step-by-Step Guide to Using Planetary Devastation!" "Still Can't Use Cursed Techniques? Learn Domain Expansion from Scratch!" "A Zanpakuto for Everyone! Learn Bankai in Ten Minutes!" "A Steal! The Easy Way to Tear a Devil Apart!"

Baizhou Chuan Xifeng takes a closer look and feels the sky come crashing down.

*

"Cursed techniques? That sounds fun." "I'm a little more interested in Water Release."

Her colleagues have already started flipping through the booklets. To fit in, Baizhou Chuan Xifeng reluctantly picks up "The Cursed Flame of Dying Will: Something 99% of People Don't Know."

There's no way this stuff... Huh? It actually exists?!!

*

While pursuing the Heavenly Restriction Tyrant, Baizhou Chuan Xifeng uses the newly learned Sun Flame to save a girl who was nearly shot, then charges in with her sword.

"Water Breathing, Fourth Form: Striking Tide."

The narrow-eyed boy stares at her in shock. "Y-You're a Jujutsu Sorcerer?"

"Don't curse at me. I'm a police officer." Baizhou Chuan Xifeng gives him a cold look and flashes her badge. "Assault, disorderly conduct, property damage... and you even attacked a police officer? Both of you are under arrest."

Handcuffed, Toji Fushiguro: "...?"

Suguru Geto, given the same treatment: "...Ah, am I included too?"

"Obviously. If you have a lawyer, call them. For now, you're coming with me to make a statement." Baizhou Chuan Xifeng pulls out her notebook and writes down their names and ID numbers, then casually asks, "By the way, do you have any accomplices?"

Suguru Geto obediently nods and looks over her shoulder.

Satoru Gojo, just revived and already rushing over to help, his face covered in blood: "?"

Me?

Points at himself with one hand.jpg

*

Sabito, who has learned ninjutsu, and Inosuke Hashibira, who is immune to ocular techniques, are sent to Konoha City on an assignment.

Makomo and Zenitsu Agatsuma, now proficient in cursed techniques, infiltrate Public Safety's Special Division 4 for Devil Hunters.

To investigate the criminal group of a hundred people called "Jujutsu Sorcerers," which has been violating red lines with reckless abandon in recent years, Tanjiro Kamado volunteers. He has awakened a technique that lets him foresee the future.

He vaguely glimpses the beginning of a major disaster years from now. The keywords he extracts are "cult," "brain in a jar," "destroy humanity," and "Prison Realm."

...What is all this supposed to mean?

For certain reasons, Baizhou Chuan Xifeng has such a deep hatred of cults that the subject gives her PTSD. She firmly raises her hand. "I'm going too."

The chief glances at the two most honest people in the department, then silently changes the undercover mission to a negotiation mission.

*

On her first day infiltrating Jujutsu High, Baizhou Chuan Xifeng comes face-to-face with two familiar faces.

"You... aren't you that police..." The Six Eyes boy she'd personally arrested looks conflicted.

Baizhou Chuan Xifeng calmly cuts him off. "Police what? I'm a Jujutsu Sorcerer."

Suguru Geto: "…"

Do you hear yourself right now?

*

On a day off at the end of the month, after listening to her friends complain about their bizarre targets and thinking about those two chuuni boys who call themselves "the strongest" and are impossible to reason with, Baizhou Chuan Xifeng takes a deep breath and messages her younger cousin, studying abroad: "Make sure you study hard and be a good person, Sawada."

Thank goodness.

The kid may be obsessed with that black-something game, but deep down, he's still a good kid.

*

The biggest mafia boss in the underworld, Sawada Tsunayoshi: "...Okay."

"Now, where were we?" He turns off his phone, folds his hands, and faces the leaders of the Three Great Families and the ninja world, assuming the posture befitting a godfather. "The King of Curses? Infinite Tsukuyomi? Please, go on."

*

If the villains also had a tea party.

Pure Love Warrior, Uchiha Obito: "I want to create a world where Rin exists."

Obsessed with his ideals, Suguru Geto: "I want to create a world with only Jujutsu Sorcerers."

The Boss, Muzan Kibutsuji: "I want to create a world without ultraviolet rays."

Brainwashed by aliens, Uchiha Madara: "I want to create a world of eternal peace, without war."

Control Devil, Makima: "I want to create a world where everyone can love one another equally and live together in happiness."

The Shinigami who won't stay dead, Sosuke Aizen: "I want to create a new world defined by me."

A true gourmand, Ryomen Sukuna: "I don't really care... I just hope humans can marinate themselves into something tastier."

Byakuran, with a marshmallow in his mouth, raises his hand. "I want to destroy the world~♪ Because I'm the one and only god~♪"

"...?"

Their objectives suddenly become crystal clear, and everyone else's eyes sharpen at once.

*

Giyu Tomioka, passing by: "If I had to say, I want a world made entirely of salmon daikon."

Baizhou Chuan Xifeng pulls out her handcuffs, looking like she's thinking, "Cuff them, cuff them all. Work is already annoying enough." "...No, who asked you?"

*

A crossover of Demon Slayer, Katekyo Hitman Reborn!, and Jujutsu Kaisen, with Gintama, Naruto, Bleach, Chainsaw Man, and Rurouni Kenshin making guest appearances too. Since they're all in the same world, their power levels will obviously be balanced. Please, no nitpicking or power-scaling debates. I just want to write warm, funny slice-of-life stories.

Her golden finger is Transparent World, a concept-based technique that lets her cut anything she wants, a Domain that ignores all supernatural powers like cursed energy, spiritual energy, chakra, and devil abilities (because she sincerely thinks they're ridiculous) and forces everyone into a good old-fashioned physical brawl, Sun Flame, and a photographic memory. Her character is still an ordinary person with mediocre talent and five spiritual roots (x).

An ensemble story with utopian, dream-fulfillment vibes. There won't be much romance in the main story, though there may be more in the extras.

Theme: The ordinary lives we experience may be dreams our predecessors never dared to hope for.