Crossovers & Fandom Fusions FanFiction

Long Live the King (Male Reader x Crossover Harem)

Long Live the King (Male Reader x Crossover Harem)

F/F
F/M
M/M
G
Updated
11.04.2025
Fandom
僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga) 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime) 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga)
Characters
Makima (Chainsaw Man), Toga Himiko, Uraraka Ochako, Gojo Satoru, Sukuna | Ryoumen Sukuna, Ruby Rose (RWBY), Yang Xiao Long, Cinder Fall, Weiss Schnee, Blake Belladonna, Kanroji Mitsuri, Kochou Shinobu,
Tags
Magic Dragons Chaos Sex Vampires Death Supernatural Elements Reincarnation Crossover Assassins & Hitmen Spies & Secret Agents Multiverse
Yuu and her friend Kyurem

Yuu and her friend Kyurem

G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling Twisted-Wonderland (Video Game) Pocket Monsters | Pokemon - All Media Types
Characters
Yuu | Player (Twisted-Wonderland), Arceus (Pokemon), N | Natural Harmonia Gropius, Kyurem (Pokemon)
Tags
What-If Author Is Sleep Deprived Crossovers & Fandom Fusions add more tags later
Usually, Yuu falls out of Wizarding Britain and into Twisted Wonderland in Writingerror’s canon storyline and original twst. However, what if Yuu falls into the world of Pokemon, the country of Unova?Ps. the reader who wanted Yuu to have a Kyurem. He...
Everlasting

Everlasting

M/M
G
Updated
13.04.2025
Fandom
Harry Potter - J. K. Rowling One Piece (Anime & Manga) One Piece (Live Action TV 2023)
Characters
Harry Potter, Ron Weasley, Neville Longbottom, Blaise Zabini, Roronoa Zoro, Harry Potter/All, Johnny (One Piece), First Mr. 7 (One Piece)
Tags
Alternate Universe - Canon Divergence Other Additional Tags to Be Added Crossover Pairings Crossovers & Fandom Fusions
The Deadly Hallows, because of course it was.Feelings the wand still in his hand start to shiver, he looked at it and was not even surprised to see it wasn’t as he thought his beloved Holly wand, but the much uglier Elder one.The muggle who was at th...
Sinister Affinities

Sinister Affinities

F/F
M/M
G
Updated
11.04.2025
Fandom
Supernatural (TV 2005) Affinity - Sarah Waters
Characters
Sam Winchester, Dean Winchester, Selina Dawes/Margaret Prior, Dean Winchester/Sam Winchester, Margaret Prior, Selina Dawes
Tags
Other Additional Tags to Be Added Obsession Sequel Canonical Character Death Spoilers Suicide Ghosts Crossovers & Fandom Fusions Crossing Timelines Case Fic London Rare Fandoms
When Sam and Dean follow a message from the British Men Of Letter to London, they have no idea what to expect. In fact, they are instructed by the delegation to take care of the ghost of a woman who has been haunting the area since Victorian times. R...
Starlight

Starlight

F/F
G
Updated
11.04.2025
Fandom
Harry Potter - J. K. Rowling Women's Association Football | Women's Soccer RPF
Characters
Leah Williamson, Katie McCabe, Beth Mead, Steph Catley, Alessia Russo, Vivianne Miedema, Lotte Wubben-Moy, Lia Wälti, Ella Toone, Alessia Russo/Leah Williamson
Tags
Enemies to Friends to Lovers Strangers to Lovers Alternate Universe - Fantasy Alternate Universe - Harry Potter Setting Crossovers & Fandom Fusions Quidditch
Alessia Russo had never been interested in the talented Slytherin beater before she mysteriously quit the team.Thankfully, she did.
cherry blossoms

cherry blossoms

F/F
G
Updated
11.04.2025
Fandom
Dangan Ronpa Series Mahou Shoujo Madoka Magika | Puella Magi Madoka Magica
Characters
Tsumiki Mikan, Enoshima Junko/Tsumiki Mikan, Enoshima Junko, Enoshima Junko & Tsumiki Mikan, Izabel the Artist Witch
Tags
Character Death Abuse Abusive Relationships Prequel Unhappy Ending Suicide Crossovers & Fandom Fusions Femslash February Femslash February 2025 Alternate Universe - Madoka Magica Fusion Witches (Madoka Magica) - Freeform Witches
Mikan Tsumiki is not a heroine.[Danganronpa Femslash February Day Twenty-Three: Heroine.]
【全职高手x金光布袋戏】橙游蝶梦

【全职高手x金光布袋戏】橙游蝶梦

F/F
G
Updated
11.04.2025
Fandom
全职高手 - 蝴蝶蓝 | Quánzhí Gāoshǒu - Húdié Lán 金光布袋戲 | Kimkong Glove Puppetry (TV)
Characters
福尔摩斯兄弟, Su Mucheng, Liat Hong-tiap | Lie Fengdie
Tags
Crossover Crossovers & Fandom Fusions
完全是个人爱好的拉娘故事
Everything All At Once

Everything All At Once

F/F
G
Updated
11.04.2025
Fandom
Harry Potter - J. K. Rowling 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga) Percy Jackson and the Olympians & Related Fandoms - All Media Types
Characters
Original Female Character(s), Original Female Character(s)/Original Female Character(s), Reyna Avila Ramírez-Arellano, Reyna Avila Ramírez-Arellano/Original Female Character(s)
Tags
Other Additional Tags to Be Added Morally Ambiguous Character Crossovers & Fandom Fusions Gods Mega super cool crossover
What happens when each fourth of the ones with the title of God, Death, Warrior, Famine, and Plague, finally realize that they can combine worlds while the predetermined stories are already in progress? Can these teenagers that are multiple infinitie...
Marinette's New Puppy

Marinette's New Puppy

F/F
F/M
G
Updated
11.04.2025
Fandom
Miraculous Ladybug Poppy Playtime (Video Game)
Characters
Marinette Dupain-Cheng | Ladybug, Adrien Agreste | Chat Noir, Alya Césaire/Nino Lahiffe, Alya Césaire, Nino Lahiffe, Marinette Dupain-Cheng | Ladybug/Kagami Tsurugi, Adrien Agreste | Chat Noir & Marinette Dupain-Cheng | Ladybug, Kagami Tsurugi, Juleka Couffaine, Yarnaby (Poppy Playtime), Gabriel Agreste, Rose Lavillant,
Tags
Crossover Crossovers & Fandom Fusions Monsters Protective Kagami Tsurugi Alya Césaire Bashing Yarnaby is a dog Lesbian Kagami Tsurugi Poppy Needs a Hug (Poppy Playtime) Alya Césaire Redemption Confused Alya Césaire Protective Marinette Dupain-Cheng | Ladybug Alternate Universe - No Miraculous Jewels (Miraculous Ladybug)
Mari gets a Highly aggressive new pet
a different dimension (you open my eyes)

a different dimension (you open my eyes)

F/F
F/M
M/M
Multi
G
Updated
11.04.2025
Fandom
Percy Jackson and the Olympians & Related Fandoms - All Media Types The Music Freaks (Web Series)
Characters
Percy Jackson, Annabeth Chase (Percy Jackson), Annabeth Chase/Percy Jackson, Grover Underwood, Drew/Jake (The Music Freaks), Luke/Zander (The Music Freaks), Drew (The Music Freaks), Jake (The Music Freaks), Zander (The Music Freaks), Henry (The Music Freaks), Liam (The Music Freaks), Hailey (The Music Freaks),
Tags
Fluff Angst Other Additional Tags to Be Added Angst and Hurt/Comfort Fluff and Angst Tags May Change Crack Treated Seriously Out of Character The Author Regrets Everything Tags Are Hard Implied/Referenced Cheating The Author Regrets Nothing
Jake was tired, and really wanted to rest. They had just won the competition, and he was really hoping to have a smooth sailing week. But instead, he found himself in a mansion in the middle of an empty void, with his friends and ex-friends, a st...
Draco Malfoy y los Dioses Mitológicos

Draco Malfoy y los Dioses Mitológicos

F/F
F/M
M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Percy Jackson and the Olympians - Rick Riordan
Characters
Harry Potter, Draco Malfoy, Ron Weasley, Hermione Granger, Lucius Malfoy, Neville Longbottom, Narcissa Black Malfoy, Lucius Malfoy/Narcissa Black Malfoy, Theodore Nott, Anthony Goldstein, Draco Malfoy & Harry Potter, Percy Jackson,
Tags
Draco Malfoy in the Muggle World Slytherin Hogwarts First Year Bottom Draco Malfoy Crossovers & Fandom Fusions Bisexual Percy Jackson POV Draco Malfoy Draco Malfoy Needs a Hug Camp Half-Blood (Percy Jackson) Ravenclaw Percy Jackson Needs a Hug Gay Draco Malfoy
Draco estaba jodido en términos generales.Él no sabe el momento exacto en el cuál todo se fue a la mierda. Sólo recuerda que estaba con su Madre en Londres muggle -por favor, no le digan eso a su padre o lo matará, gracias- y apareció esa cosa con un...
I only pray, don't fall away from me

I only pray, don't fall away from me

M/M
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling Good Omens (TV) Good Omens - Neil Gaiman & Terry Pratchett
Characters
Regulus Black/James Potter, Regulus Black, Sirius Black/Remus Lupin, Remus Lupin, Sirius Black, James Potter, Peter Pettigrew, Lily Evans Potter, Mary Macdonald (Harry Potter), Marlene McKinnon, Albus Dumbledore, Voldemort (Harry Potter),
Tags
Marauders Era (Harry Potter) Marauders My First Work in This Fandom Crossover Crossovers & Fandom Fusions Ineffable Husbands (Good Omens)
Marauders x good omens crossoverregulus and james as crowley and azriphalesirius and remus as bezzelbub and gabriel
Dedsocks story ideas

Dedsocks story ideas

G
Updated
14.04.2025
Fandom
House of the Dragon (TV) Harry Potter - J. K. Rowling Spider-Man - All Media Types
Characters
Harry Potter, Peter Parker, Peter Parker & Morgan Stark (Marvel Cinematic Universe), Jason Todd, The BAU Team (Criminal Minds), Kreacher (Harry Potter), Teddy Lupin, The Gallaghers (Shameless US), Hydra Agents, Teddy Lupin & Harry Potter, Winky | Crouch Family House-Elf, Harry Potter & Everyone,
Tags
Hydra Peter Parker Reincarnation Magically Powerful Harry Potter Good Parent Charlie Swan Crossovers & Fandom Fusions Out of Character Bella Swan Harry Potter Raises Teddy Lupin Harry Potter is Heir to Multiple Noble Houses Trans Danny Fenton Peter Parker Whump Veela Harry Potter Alternate Universe - Always a Different Gender or Sex
Basically writing down different ideas I’ve had for stories that I will probably never get around to writing.Warning:these are not actual stories, they are more or less outlines for a story.
Wraith

Wraith

Gen
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling 文豪ストレイドッグス | Bungou Stray Dogs
Characters
Remus Lupin, Sirius Black, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger, Fred Weasley, George Weasley, Blaise Zabini, Dazai Osamu (Bungou Stray Dogs), Pansy Parkinson, Mori Ougai (Bungou Stray Dogs)
Tags
Self-Harm Implied/Referenced Child Abuse Bullying Crossovers & Fandom Fusions Dazai-Typical Suicide Mentions (Bungou Stray Dogs) Eating Disorder Not Otherwise Specified Don't copy to another site Port Mafia Dazai Osamu (Bungou Stray Dogs) Young Dazai Osamu (Bungou Stray Dogs) Chapters will become longer
Dazai’s third year at Hogwarts has begun, but not without a hitch.It starts with Mori’s new command and Lucius’ insistence. Maybe he should just die now and avoid the hassle.Blaise wouldn’t appreciate that. A continuation of Magic and Mystery by Alle...
Trapped in Minecraft Diaries [MyStreet X MCD]

Trapped in Minecraft Diaries [MyStreet X MCD]

F/F
F/M
M/M
G
Updated
11.04.2025
Fandom
MyStreet - Aphmau (Web Series) Minecraft Diaries - Aphmau (Web Series)
Characters
Kawaii~Chan/Zane Ro'Meave, Lucinda/Melissa Lycan, Lucinda & Zane Ro'Meave, Kawaii~Chan & Zane Ro'Meave, Emmalyn (Minecraft Diaries) & Kim (MyStreet), Kawaii~Chan (MyStreet), Lucinda (Mystreet), Zane Ro'meave (Mystreet), Kim (MyStreet), Zane Ro'Meave, Celestia (Mystreet)
Tags
LGBTQ Female Character Crossover Crossovers & Fandom Fusions Witches Zane Ro'Meave Needs A Hug Ultima Werewolves (MyStreet)
It's been a year since the Demon Warlock incident and things are looking good Zane has almost fully recovered from his affliction and Lucinda is beginning to make progress as well life is good that is until some of the gang end up zapped to another w...
(suck it up)

(suck it up)

F/F
F/M
M/M
Multi
G
Updated
11.04.2025
Fandom
文豪ストレイドッグス | Bungou Stray Dogs Dangan Ronpa Series
Characters
Nakahara Chuuya (Bungou Stray Dogs), Dazai Osamu (Bungou Stray Dogs), Dazai Osamu/Nakahara Chuuya (Bungou Stray Dogs), Mori Ougai (Bungou Stray Dogs), Tsumiki Mikan, Enoshima Junko/Tsumiki Mikan, Chou Koukou Kyuu no Sagishi | Ultimate Imposter & Mitarai Ryota & Tsumiki Mikan, Koizumi Mahiru & Mioda Ibuki & Saionji Hiyoko & Tsumiki Mikan, Mioda Ibuki/Saionji Hiyoko, Ikusaba Mukuro/Naegi Makoto, Dazai Osamu (Bungou Stray Dogs) & Tsumiki Mikan, Dazai Osamu (Bungou Stray Dogs)/Tsumiki Mikan,
Tags
Pre-Canon Character Death Fix-It Fix-It of Sorts Pre-Relationship Crossover Crossovers & Fandom Fusions Dazai-Typical Suicide Mentions (Bungou Stray Dogs) Dazai-Typical Suicide References (Bungou Stray Dogs) Dazai Osamu is a Mess (Bungou Stray Dogs) Caring Dazai Osamu (Bungou Stray Dogs) Dazai Osamu Needs a Hug (Bungou Stray Dogs)
Port Mafia member Mikan Tsumiki is invited to Hope's Peak Academy as the Ultimate Nurse. How will the story of Danganronpa change when Mikan is already loyal to someone else?[Covers the HPA years, Stormbringer, & The Day I Picked Up Dazai. Next p...
Across heavens and the earth, I will keep searching for you

Across heavens and the earth, I will keep searching for you

Gen
G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling 文豪ストレイドッグス | Bungou Stray Dogs
Characters
Draco Malfoy, Blaise Zabini, Akutagawa Ryuunosuke (Bungou Stray Dogs), Nakahara Chuuya (Bungou Stray Dogs), Dazai Osamu (Bungou Stray Dogs), Edogawa Ranpo (Bungou Stray Dogs), Yosano Akiko (Bungou Stray Dogs), Kunikida Doppo (Bungou Stray Dogs), Fukuzawa Yukichi (Bungou Stray Dogs), Tanizaki Junichirou (Bungou Stray Dogs), Miyazawa Kenji (Bungou Stray Dogs), Mori Ougai (Bungou Stray Dogs),
Tags
Eating Disorders Crossovers & Fandom Fusions Dazai-Typical Suicide Mentions (Bungou Stray Dogs) Alternate Universe - BEAST Light Novel (Bungou Stray Dogs) Port Mafia Boss Dazai Osamu (Bungou Stray Dogs) Inspired by Magic and Mystery Series - Allegory_for_Hatred Bungou Stray Dogs: BEAST Dazai Osamu ADA member Blaise Zabini Magic and Mystery X BSD Beast universe
Ever since Blaise joined the Armed Detective Agency, two years ago when he was twenty, his life had been very eventful. Looking for criminals, getting chased by men with guns and other things now belonged to his normal day to day life.Since all those...
Callyieverse: Gods & Monsters

Callyieverse: Gods & Monsters

F/F
F/M
Gen
Multi
G
Updated
11.04.2025
Fandom
The Owl House (Cartoon) Gravity Falls Multi-Fandom
Tags
Original Character(s) Crossovers & Fandom Fusions Next Generation OC's - Freeform Next Gen
Sekhmet’s fiery nature meets Eris’s chaotic nature as they both try to control the fate of an infant Titan. It’s only the first chapter of a story that promises to shake gods and monsters alike.
a HERO and a STAR

a HERO and a STAR

F/F
F/M
Gen
M/M
Multi
Other
G
Updated
11.04.2025
Fandom
プロジェクトセカイ カラフルステージ！| Project SEKAI COLORFUL STAGE! (Video Game) Ensemble Stars! (Video Game)
Characters
Kamishiro Rui/Kusanagi Nene/Ootori Emu/Tenma Tsukasa, Tenma Saki, Ootori Emu, Kusanagi Nene, Tenma Tsukasa, Kamishiro Rui, Tenma Saki & Tenma Tsukasa, Morisawa Chiaki & Nagumo Tetora & Sengoku Shinobu & Shinkai Kanata & Takamine Midori, Morisawa Chiaki/Tenma Tsukasa, Morisawa Chiaki, Shinkai Kanata, Nagumo Tetora,
Tags
Crossovers & Fandom Fusions Tenma Tsukasa Needs a Hug Morisawa Chiaki Needs a Hug Why is there no Morisawa Chiaki Needs a Hug tag
Chiaki and Tsukasa are living their lives like every other day, but by coincidence, the two meet and see they actually get along.Chiaki is in his third year of highschool, Tsukasa is in his second.
Matches and Candlesticks

Matches and Candlesticks

G
Updated
14.04.2025
Fandom
Harry Potter - J. K. Rowling 文豪ストレイドッグス | Bungou Stray Dogs
Characters
Remus Lupin, Sirius Black, Severus Snape, Draco Malfoy, Ron Weasley, Hermione Granger, Ginny Weasley, Fred Weasley, George Weasley, Blaise Zabini, Dazai Osamu (Bungou Stray Dogs), Pansy Parkinson,
Tags
Self-Harm Implied/Referenced Child Abuse Bullying Crossovers & Fandom Fusions Dazai-Typical Suicide Mentions (Bungou Stray Dogs) Eating Disorder Not Otherwise Specified Port Mafia Member Dazai Osamu (Bungou Stray Dogs) Young Dazai Osamu (Bungou Stray Dogs) A fanfic of a fanfic
He had no doubts anymore.This was the demon student.The one who would start another war.And there was no way Sirius would let him.Not after everything he’d lost.OrDazai attends his 3rd year at Hogwarts, with his friends. Everything would be normal, b...