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Fanfic Recs / Fate/Grand Order

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Proof that the remaining 10% is worth restoring the Human Order is here. The other 90% have been pruned and turned into Lostbelts.

These are recommendations made by Tropers for Fate/Grand Order fanfics, all of which have to be signed to stay on their respective pages. Feel free to add a recommendation of your own to the appropriate list, but remember to use the template found here.

You can also add to the current recommendations if you want. You can do it by expanding on the synopsis and/or pertinent tags, or linking similar or related fanfics. Reviews are also encouraged, but please make sure to make reviews have substance; if you simply want to recommend a fic without an extensive review, put your Troper name in the Recommended by line of the fic in question. Please use the discussion page for conversations about fics

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    Authors and Websites 
GhostXavier
ClinikCase or ClinickCase
  • Recommended by saltin
  • An artist who creates highly stylized and impactful comics ranging from the comedic to the visceral.
Chaldea Gurus
  • Recommended by MrHeroes
  • Originally an effort to to just give tips for "Fate/Grand Order", Chaldea Gurus has since become an online YouTube guide how to deal with the threats of Singularities, with its own version of the story dealing with its own cast of characters.
pantsahat
  • Recommended by saltin
  • In a Massive Multiplayer Crossover world that...just...sort of...exists, Master Chief's roommate Astolfo must undertake a number of menial jobs and irreverent misadventures to keep the lights on. See him work in Chipotle, watch him get sold to GameStop employee Duke Nukem for store credit, thrill to the sight of him cooking crystal meth with legendary drug kingpin Walter "Heisenberg" White, and gaze in awe as he gets his paladin posterior in green spandex to wage a war on (online) crime alongside the Dark Knight (of Discord Mods), Batman! All this and more can be found here!
davido747
  • Recommended by ultimomant
  • All his stories focus on an alternate version of Shirou called the King of Fakers and his adventures through the multiverse. A few stories have him encounter FGO's timeline.
ekaterina016
  • Recommended by ultimomant
  • Most stories focus on an alternate Shirou who became a Heroic Vessel instead of a Counter Guardian (Heroic Vessels mostly focus on saving lives). He gets sent to different time periods to try to give everyone happier endings.

    General Fics 
The Lion King Vs The Wrought Iron Hero by Drow79
  • Recommended by: Jobit
  • Status: Complete
  • Synopsis: This New Singularity...it hurts...every time I think about it I can only think about how ashamed she would be. It's time to end this, once and for all. Oneshot.
Add Review
The NEW Twelve Labors of Heracles by OroJuice
  • Recommended by: saltin
  • Status: Complete
  • Synopsis: With the Greek Lostbelt looming over the forces of Chaldea, Jason takes it upon himself to strengthen his Argonaut Ally Heracles by reenacting his famous Twelve Labors with the power of a Holy Grail. A Bootleg Holy Grail. As the pair undertakes quests more insane and maddened than your average Berserker, they'll meet old allies and new foes, tiptoe through some ludicrously perilous locales, grapple with horrible monsters and inexplicable anti-climaxes, and perhaps discover the true meaning of friendship...or maybe they'll just die horribly like they did in their original myths. Because when you go through your Greatest Hits, sometimes they hit back.
  • Comments: Another Screenshot "Comic" by the same fan who did Nero Fest Nitwits below. This one follows a more focused and sequential narrative as Heracles and Jason undertake a journey that both celebrates and satirises how the game does Interludes and Strengthening Quests (among other targets). One reviewer says, "This is great. This is a thing I never knew I needed."
Add Review
Fragments of Chaldea by GhostXavier (link) (AO3 Version)
  • Recommended by AyaSai, DiplomaticHiatus
  • Status: Complete
  • Synopsys: Between singularities, there is plenty of downtime for the summoned servants and their master. Even with humanity's fate in constant risk, they manage to form a small semblance of a new life within Chaldea. Here they were family. An unusual and often dysfunctional one, but a family.
  • Comments: This is a Collection of Slice of Life One-Shots of how the Heroic Spirits, along with the main characters and Chaldea's surviving employees, are doing within Chaldea Security Organization. Some pieces contain epic moments, some were heartwarming, some will make you laugh, and some will make you cry. Highly recommended. Updated weekly and twice a week on rare occasions. For more info and insight of this fanfic, the author made a Tumblr blog to keep the clutter of author's notes from his work..
    • Very slight AU that follows the Grand Order timeline
    • Includes supplemental stories Their Guiding Light and Redemption from Sin, alternate novelizations of the Camelot and Babylonia Singularities respectively. Both works are complete and act as part of the core series.
    • Confirmed to have more supplementary stories in the future, including, but not limited to, Solomon Chapter, EOR, and original minor singularities.
1 Review
Nero Fest Nitwits/Jaguar Dojo CCC by OroJuice
  • Recommended by: saltin
  • Status: Complete
  • Synopsis: A Screenshot "Comic" Oddity in Nine Parts. To celebrate (and profit from) the 2019 Nero Fest Event, BB and Jaguar Man create a sports special mini-series. Ostensibly made to interview newcomers to the Chaldean Event, the program quickly goes off the rails in a hurricane of grandstanding, sinister Public Service Announcements, counterfeiting schemes, death threats, and what may be the strangest magical duel of all time.
  • Comments: Cobbled together from in-game assets, this series of nine comic strips (each focusing on a different Class) replicates the look and feel of a Fate/Grand Order gag event perfectly. As one reviewer put it, "This was so stupid, but very enjoyable. Good job."
Add Review
ForeignerGo by Hwenda
  • Recommended by: saltin
  • Status: Ongoing
  • Synopsis: The raunchy yet delicately colored antics of Chaldea's Foreigner Servants as they ponder, argue, and engage in other raunchily reprehensible behavior.
  • Comments: A Foreigner-centric comic series that runs the gauntlet of happy, sad, and always mad.
'>Add Review
Foreigner Friends by SolSpade
  • Recommended by: saltin
  • Status: Ongoing
  • Synopsis: Concerning the heartwarming and hilarious exploits of eldritch horror-empowered Servants. Plus some bonus stories to boot.
  • Comments: Currently on its third "season", and still as cute as ever!
Fate/Sunny Order by Swordomatic
  • Recommended by: Cronosonic
  • Status: Dead (Last Update was in February of 2021)
  • Synopsis: In the year 2026, Chaldea's twin Masters fight to save the future. But what happens between the apocalyptic battles for the fate of mankind? What about downtime? Where do you go when you have a hundred bored Servants and only six Command Seals? How do you deal with the Counter Guardian your dad could be? Or your aunt, King Arthur? Or the Sumerian Goddess that looks like your mom?
  • Comments: It's a fanfic where the male and female protagonists of the game are Shirou and Rin's kids sometime after the Unlimited Blade Works route of Fate/Stay Night. Aside from the obvious implications and such, it is fucking hilarious in its main chapters dealing with everyday life in the madhouse that is Chaldea, and fucking awesome when Swordomatic covers the events of the Singularities. Or just both in equal measure. Case in point? Cú Chulainn really gets the showing he deserves in France, for example. Just to note, if you want to keep track of the fic's updates, the Sufficient Velocity thread has everything up to date, including various omakes that add to the experience, and often hilarious running commentary by the posters.
Add Review
Little Ritsuka and her Loving Family by kamenhero25
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: Ritsuka, the daughter of Shirou and Rin, is a ten-year-old girl who gets dropped off at Chaldea just as the incineration of humanity begins and she becomes Chaldea's only Master. Luckily, she is able to summon Archer EMIYA and Ishtar.
Add Review
the odds are don't look far by MiniNephthys
  • Recommended by Nouct
  • Status: Complete
  • Synopsis: A short but sweet story about David and Avicebron bonding over being the only current practitioners of Judaism at Chaldea.
Add Review
Whittling by You
  • Recommended by: Nouct
  • Status: Complete
  • Synopsis: In the Camelot built over Jerusalem, one knight contemplates his options in the scant hours he has before he is due to approach the divine king that made this all happen.
Add Review
Gudako, the Supreme Master of Chaldea by sarin555
  • Recommended by: ultimomant
  • Status: Ongoing
  • Synopsis: In a strange turn of events, both male and female Ritsukas manage to escape the sabotage of Chaldea. Unfortunately, during their Rayshift process to Fuyuki, the female Ritsuka ended up traveling through the collective Salt of humanity. Emerging on the other side was not a girl, but a monster, Gudako. God save Chaldea.
  • Comments: Female Ritsuka basically turns into Gudako from Learning with Manga! FGO and drives everyone crazy, but she also saves the day more than once with her unique abilities and knowledge of the future.
Add Review
Insane Gudako by revdb
  • Recommended by ultimomant
  • Status: Dormant
  • Synopsis: Gudako, caught between the unending struggle to summon the strongest servants and her obsession to find more Saint Quartz, is dragged away into the Fourth Holy Grail War as a Servant. But instead of planning to win the war, she plans to dominate all the cool SSR servants that might appear and drag them back to Chaldea.
  • Comments: Basically, in addition to Kiritsugu summoning Artoria as Servant Saber, Irisviel summons Gudako as Servant Master, with the ability to summon the Servants of Chaldea to aid her. Gudako has the personality and unique powers of the Gudako from Learning with Manga! FGO, and she soon turns the Fourth Holy Grail War upside down.
Add Review
Little Insane Gudako by revdb
  • Recommended by ultimomant
  • Status: Dormant
  • Synopsis: On that fateful night, instead of a certain King of Knights coming to save his life, he gets a small girl that flips his world upside down.
  • Comments: Basically, when Shirou Emiya was cornered in his shed by Lancer, he summons Gudako as Servant Master, with the ability to summon the Servants of Chaldea to aid her. To complicate things, Gudako is Shirou and Rin's Kid from the Future.
Add Review
I'm Not a Regular Mom by Blinktwice 13
  • Recommended by Mattman The Comet
  • Status: ongoing
  • Synopsis: ...she's a cool mom. In which Matthew Kyrielight gets made into a Demi-Servant for a very specific incarnation of Morgan Le Fay. The one who decided she could do a better job than Merlin at being a voice of reason to Saber Lily, her dear little sister. The poor boy has no idea what he's in for.
Add Review
Fate/Gamers Only by namtap032892 (Trope Page: Fate/Gamers Only)
  • Recommended by MrHeroes
  • Status: Ongoing
  • Synopsis: A What If? where a competent protagonist (i.e a female named Rikku) faces the main story of Fate/Grand Order.
What Happens When You Summon Emiya Shirou in Chaldea by AccelBreaker
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: Ritsuka summons Shirou as Saber. The result: chaos.
  • Comments: The fic is mostly Slice of Life with action thrown in, as Shirou adjusts to daily life in Chaldea and deals with the many incarnations of his friends and family among the Servants.
1 Review
a study in catches by headlong
  • Recommended by: Nouct
  • Status: Dormant
  • Synopsis: Kadoc Zemlupus makes an application for the Astromancy Department of the Clock Tower and gets an unexpected offer from Kirschtaria Wodime.
Add Review
Tales of an American Magus by MorgothII
  • Recommended by: Queen-Roger
  • Status: Ongoing
  • Synopsis: Jacob Aronson, a Magus from America, was selected to join the other Forty-Eight Master Candidates at Chaldea. After a major accident, he finds himself as one of the two remaining Master Candidates of Chaldea, and summons as rebellious knight as his first Servant. Join Jacob and Ritsuka as they fight to save humanity, and show the will to fight on.
  • Pairing(s): Orginal Male Character/Mordred, Male Fujimaru Ritsuka/Mash Kyrielight
  • Tags: Friendship, Emotional Hurt/Comfort, Action/Adventure, Romance, Fluff, Angst, Character Death, Mordred is best Saber, Some adult language, Mostly cause Mordred and Jalter, Character Development
  • Comments:
Add Review
Fate: Sword Order by Parcasious
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: Shirou Emiya, veteran of the Fifth Holy Grail War and aspiring Hero of Justice, joined Chaldea and assists the male Ritsuka Fujimaru and Mash Kyrielight in fixing the Singularities.
  • Comments: As an Experienced Protagonist, Shirou is a big help. For example, he noticed the bomb and saved Olga Marie from dying, and he convinced Saber Alter in the Fuyuki Singularity to join them.
Add Review
E Pluribus Unum: Peerless Bow by Kyogre
  • Recommended by DigiXBot
  • Status: Complete
  • Synopsis: Arjuna and Sita, the most unlikely combination, team up to throw the fifth Singularity into chaos. For Servants and humans, the end point is already determined. However, the journey is up to each to create for themselves.
  • Comments: A For Want of a Nail story where Arjuna is more proactive in gaining a fight against his rival Karna, even if it means the end of human history, while Sita is willing to try anything to break the curse that keeps her apart from Lord Rama. A story that gives the Indian servants more a spotlight during the events of the America Singularity, while the many sides try to accomplish their goals.
Add Review
Identical Contrasts by SSJeanne35
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: In Ooku, Ritsuka summons Ishtar Ashtart to deal with Kama.
  • Comments: It explores the similarities and differences between the two girls.
Add Review
Bread and Bitter by KlonoaDreams
  • Recommended by Firedragonx
  • Status: Ongoing
  • Synopsis: You'd think that waking up hungover in some random facility—of which you have no memory of ever joining—would make you the least qualified to save the world. Too bad you're all that's left, assisted by a staff made up of mostly unpaid interns, a lovable kouhai, a doctor who goes on about his internet idols, and a local thot who demands money in exchange for Saint Quartz.
  • Comments: from the author that made Butterfly Child and Façade. KlonoaDreams knows how to make good self insert and it show here.
Add Review
San Peftastéri by SnarkySharke
  • Recommended by DigiXBot
  • Status: Complete
  • Synopsis: For over a year before Chaldea's arrival, scattered Servants from Proper Human History waged a guerilla war against the Crypters in Atlantis. They fought, and died, to give you a fighting chance. This is the story of the Godbreaker Alliance.
  • Comments: The story helps explore the servants that fought against Olypmus and the Crypters while Chaldea dealt with the other Lostbelts. It not only shows the stakes and set up for the events of both Atlantis and Olympus, but shows amazing characterization and interaction from Servants like Achilles, Medea, Mordred, and Sir Kay. Readers that enjoy the various heroic spirits from the game and lore would enjoy this.
Add Review
Legacy Of The Saber King by TheImmortalWanderer
  • Recommended by JSim1998
  • Status: Ongoing
  • Synopsis: Love and hate. Two emotions that are so different, yet there is a thin line between them. Mordred's hate had driven her to slay the king the had loved after a fatal miscommunication. But what if the love Mordred held for her sire had been stronger than her hate? See how the Knight of Treachery, despite the misfortune of her birth, moved past her hate to change the destined clash.
  • Comments: The story does a great deal to help flesh out not just Mordred and Morgan Le Fay's early lives, but also provides some nice worldbuilding and insight into the Round Table, letting the reader see just how they got along and how, ultimately, they would fall apart thanks to their own flaws and Le Fay's manipulations.
Add Review
The Way, Truth, and Light by WizardlyWords
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: Ritsuka Fujimaru is recruited into Chaldea despite having no knowledge of the supernatural, but he is a devout Catholic. When Chaldea is bombed and he desperately tries to save Mash Kyrielight, he prays for help. His prayers are answered when they get sent to the Fuyuki Singularity and he inadvertently summons Jesus himself as a Servant.
  • Comments: Some of the Servants in the Singularities are changed. What really makes this fic beautiful is how much wisdom, patience, and love Jesus has. For example, when Mash reveals she has no idea who Jesus is, Ritsuka freaks out, but Jesus simply says it is to be expected since she was raised in isolation her whole life and had never seen a Bible nor had anyone to teach her about him, but she is still one of God's children and deserves his love. He then assures her that even if she was made in a lab, she has a soul.
Add Review
rotten tomatoes by Anima El
  • Recommended by Lyra Dhani
  • Status: Dead
  • Synopsis: At the end of a play, what happens to the protagonist when their role is over? Post the restoration of panhuman history, Fes-ranked civilian Fujimaru Ritsuka dies under the confines of unknown mages. Summoned to stop a threat to humanity due to her unprecedented death as a lynchpin, a counter guardian investigates the circumstances of a murder as old acquaintances from Chaldea join to assist. Meanwhile, unwittingly witnessing the last dream of Chaldea's ex-master, a certain terminal device renews his plans to eradicate humanity.
Add Review
Fate/Grand Order: 7th Order by Soul Matter
  • Recommended by: VictorioMWolff-Haddock
  • Status: Ongoing
  • Synopsis: Fujimaru Ritsuka, the Last Master of Humanity. One who stood against the Incineration of mankind, standing side by side with history's greatest heroes to save the world.

    However, in this timeline, other Masters stepped up to the challenge, joining Ritsuka in Chaldea's Grand Order.

    Seven masters fight for humanity's future, to prevent the end of the Human Order.

    Shipping Fics 

Saber-Face by ThatOneGuy747

  • Recommended by ultimomant
  • Status: Dormant
  • Synopsis: Shirou Emiya joins Chaldea and fights side by side with female Ritsuka and Mash to fix the Singularities. Shirou repeatedly tries to summon his love, Saber/Artoria Pendragon, but he keeps getting different Saberfaces instead. And they are all in love with him.
Add Review
Glass Vase by kaeneuss, onionflower (FF.net link)
  • Recommended by Nouct
  • Status: Complete
  • Synopsis: The bond between Ophelia Phamrsolone and Kirschtaria Wodime told in vignettes with Agapanthus flowers.
Add Review
Servant Shenanigans by DraketheDragon
  • Recommended by Lermis''
  • Status: Ongoing
  • Synopsis: Just a bunch of stories about various servants and what they get up to. Some will be shippy, some will be character reflections. They should be in chronological order.
Something Lost, Something Found by Jack_Simpson
  • Recommended by The Immortal Wanderer
  • Status: Ongoing
  • Synopsis: After the Lostbelt Avalon le Fae, Morgan has lost everything including her own life. Everything she had strived to achieved had amounted to nothing, but after being summoned to Chaldea she now fights for the very Panhuman History she originally tried to overwrite. But despite that loss, she finds in the new Master of Chaldea a hope for a new beginning, and all that followed began with the simplest of gestures... a chin scratch.
  • Pairings(s): Morgan/M!Ritsuka Fujimaru, Sigurd/Brynhildr
  • Tags: Fluff and angst, Action/Adventure, Psychological Trauma, Family Bonding, Friendship.
Add Review
Under The Firework by SakataTetsuya
  • Recommended by Kage Tsuki 88
  • Status: Complete
  • Synopsis: A brief meeting between a little girl and a familiar yet strange woman. A conversation between said young woman and her partner under the colorful night sky. An one-shot I wrote out of my amusement. MERRY CHRISTMAS! Ritsuka x Void Shiki (implied Harem though)
  • Pairings(s): Primarily「Shiki Ryougi」x Ritsuka Fujimaru, with very minor harem elements
Add Review

    Crossover Fics 
A daughter and a legend by Kamen Rider Dimension
  • Crossover with: High School D×D and Doctor Who
  • Recommended by ultimomant
  • Status: Dead; last updated October 2019
  • Synopsis: Takumi Yuu is a lonely librarian who wishes he had children of his own. One day, his wish is granted when he accidentally summons Nursery Rhyme/Alice and Jack the Ripper. Before he even has a chance to understand what is going on, he and his new children get caught up in Issei Hyoudou's story. Later, more Servants arrive, including The Doctor as Rider.
Add Review
A Different Kind of War by Parcasious
A Ghost in a Strange Land by Crimson Eyes
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: God of War
  • Status: Ongoing
  • Synopsis: Following Ragnarök, Kratos is ambushed by several former servants of Odin bent on murdering him — or, if they cannot do that, casting him out of the Nine Worlds entirely.

    The latter option succeeds, throwing the God of War in Singularity F.

    Kratos is done with war and only craves for peace. But if he wants to go back to Midgard and his son, he will have to fight yet again.
  • Comments: Kratos appears in Fuyuki just after Ragnarok, and taking over Ritsuka as the Master as she is critically injured.
  • Has a Trope page.
A Heroic Avenger by Nergal D
  • Crossover with Is It Wrong to Try to Pick Up Girls in a Dungeon?
  • Recommended by AftermathJack
  • Status: Complete
  • Synopsis: The Weakest Servant in existence, nothing more than garbage be it a Holy Grail War or any sort of fight. Yet upon gaining a new Master after a hero of justice stopped his corruption and sent to another realm, things just might change. In a land full of Gods and mortals alongside his new Master, maybe Angra can do something with his life. Hero? Villain? Avenger? Only time will tell.
Add Review
A Heroic Grand Order by Saikazo the Writer
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Dead; last updated August 29th, 2022
  • Synopsis: Two weeks after All Might gave his all to stop All for One, strange things are going on in the city of Musutafu. A secret war is being fought at night, and rumors that All Might has returned spread like wildfire. It's up to the Last Master of Chaldea and the latest inheritor of One for All to get to the bottom of this mystery and set time back on its proper course.
  • Comments: Izuku & Bakugo unknowingly participate in the Holy Grail War with St. Martha & Beowulf respectively, while Ritsuka enters this story with B.B. in tow as his Servant.
A Silver Knight in the Lands Between by Archangel61 (Spacebattle Link)
  • Recommended by: VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover with: Elden Ring
  • Synopsis: The fall of Camelot is a memory that never fails to haunt the King of Knights even after so long. From world to world did he travel, dedicated to his mission in ending the life of the Beast.

    Once was the Lands Between ruled over by the Golden Order and the Erdtree. Now it's in the midst of a civil war, fighting over fragments of an object that can manipulate the stars. All the while a Beast of Humanity lingers beneath the surface, unaware to even the Great Will.

    Arise, Arthur Pendragon, for a king is needed once again.
  • Comment: To truly be restored, The Lands Between would need an Experienced Protagonist in fight and kingship. And who wouldn't be better than one Arthur Pendragon, as he chased The Black Beast throughout the multiverse?
Avenging Class by JonBerry
  • Crossover with Marvel Cinematic Universe
  • Recommended by HarryP22h
  • Status: Ongoing
  • Synopsis: Mysterious Heroine XX makes a wrong turn through the Kaleidoscope on her way to a Foreigner incursion, and winds up arriving on Earth during the Chitauri attack at the climax of The Avengers and helps in the final battle. However, in the followup, she finds that she is now trapped in that Universe and decides to stick around for a while for her own reasons.
  • Now has a Tropes page
Add Review
Chaldea in Remnant by Starlight's Poet
  • Crossover with: RWBY
  • Recomended by WorstOtakuEver
  • Status: Indefinite hiatus
  • Synopsis: Da Vinci's latest experiment results in Chaldea mysteriously landing in a brand new world. One where myths and legends are forgotten. For better or worse, Ritsuka Fujimaru is about to revive those fairy tales while simultaneously getting involved in a secret war between an immortal and a witch. Just another day at the office.
  • Now has a Trope Page
Add Review
Chronal Disassociation by Almistyor
  • Recommended by VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover with: Overwatch
  • Synopsis: OWX-01 Slipstream - an experimental, teleporting fighter jet commissioned by Overwatch. On the day of its inaugural flight, Lena Oxton, pilot of the Slipstream, was caught in an accident and disappeared.
  • Comments: This leads to Lena encountering Emiya and making a contract with him as her Servant. To Emiya's shock, The Clocktower is empty, and Ramattra posses klironomia...
Code Geass: Lelouch of the Grand Order by sephiroth12285
  • Recommended by: VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover With: Code Geass
  • Synopsis: To protect his sister and himself from Britannia's politics following Japan becoming Area 11 he made a deal with the Head of the Animusphere Family. In exchange for becoming a master for Chaldea when the time came, Lelouch and Nunnally would be hidden and protected. Lelouch travels to Chaldea to fulfill the end of his agreement unaware of what is awaiting him.
  • Comment: Pretty good. There is a surprise that the first Singularity after Fuyuki is Code Geass's Alternate History.
The Day A Star Was Born by crestfallentwilight
  • Recommended by: VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover with: Oshi no Ko
  • Synopsis: When Ai Hoshino overhears her children's strange musings over their father, Ai decides to reach out to her lover. He had mentioned that he wouldn't be able to contact her for a while after taking on his newest job, but the last time they talked was when they found out Ai was pregnant. Years are spent lying to forge a perfect facade, yet it cracks so easily as she drops the phone.
  • Comments: In this fic, Ritsuka Fujimaru is Ai's childhood friend turned lover, and the father of Aquamarine & Ruby, before being hired by Chaldea.
Demon in Fodlan by Mundatorem
  • Recommended by: kurohime666
  • Status: Ongoing
  • Crossover with: Fire Emblem: Three Houses
  • Synopsis: Goetia, surviving his failure at the Temple of Time, finds himself in a new world. Despite the rather unusual nature of it, he finds himself disappointed that he seen much of the same human nature that he saw on Earth. Determined to discover what it was that made human life worth the struggle, he decides to use his second chance to find the meaning of his own life.
  • Now has a trope page.
Dragon Ball: Faded Dawn by TheCongo
  • Crossover with: Dragon Ball
  • Recommended by PureSalty101
  • Status: Updating
  • Synopsis: Even as the Cell games came to a crashing end, his mind drifted toward another time, to a war that would end with his return, only to find himself in a new conflict with all of humanity on the line once more. From one dark future to another, Trunks must fight through legends across all walks of existence to return home and finish what he started.
  • Comments: A story where Future trunks somehow landed in Singularity F and became the master of Chaldhea so his time machine could be fixed. (As a side note, Gudao's killed off and Trunks is the master in this story.)
Devil's Grand Order by KuroShoufox
  • Recommended by: VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover with: Devil May Cry
  • Synopsis: Chaldea Security Organization was founded to focus on preserving the continuation of human history. Until one day it could no longer be observed. Now humanity is facing extinction unless the singularities are repaired. Powerful Gods, demons,servants and other entities await, what human could stand against them. Enter a Son of Sparta to aid Chaldea with some style.
  • Comments: Vergil reincarnated as Ritsuka, and comes with Yamato.
Dreamer of the Eternal Hunt by Count chaos
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with Bloodborne
  • Status: Ongoing
  • Sypnosis: An old nightmare stirs, calling forth a world long forsaken. Beckoning the last bastion of humanity, Chaldea, to a land tainted by blood. Mysteries shroud every path, tempting Abigail Williams and Ritsuka Fujimaru with secrets beyond the veil of reality. But such secrets are better left alone. Nor are they without a price to be paid. For the Eternal Hunt must always have a dreamer.
  • Comment: Just as Fairy Britain is destroyed, a Lostbelt is built on top of it. Just as things go bad, The Good Hunter's first encounter with Chaldea is with Abigail...
Fate Azure Destiny by Polyfemus
  • Crossover with Azur Lane
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: Many years after the battle against Goetia and the end of the Grand Order, Fujimaru Ritsuka finds himself involved in another war. Will the previous last master of humanity be able to accept his role in the incoming war? [AU]
  • Comments: Ignores the events of Epic of Remnant and Cosmos in the Lostbelt. Basically, Mashu Kyrielight wasn't resurrected after the battle with Goetia, leaving her shield behind. Years later, Ritsuka Fujimaru is depressed by the loss of his love and friends, with only Mashu's shield to remember her. He moves to England and lives an ordinary life as a school teacher. One day, he gets caught up in the conflict between Azur Lane's shipgirls and the Sirens when they detect he is not an ordinary human.
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Fate DxD AU by QuartzScale (fanfiction.net link here)
  • Crossover with High School D×D
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: A corrupted grail is found within a strange parallel world and once again Chaldea has decided to send the last master of humanity, Ritsuka Fujimaru, to hunt it down. Unfortunately due to the poor timing of one, Rizevim Livan Lucifer, the rayshift procedure ends in catastrophe as the sole master is sent alone to this parallel world. Fortunately for him, Illya of the magical girl world prepared a way to protect their master no matter what. Alone but undeterred Ritsuka will travel forth to find this corrupted grail and hopefully a way to get back to Chaldea once more.
  • Comments: Ritsuka finds himself in the DxD world alone and cannot contact Chaldea or summon anyone. Fortunately, Illya gave him Class Cards of all his Servants, allowing him to take on their powers. He becomes a Showy Invincible Hero as he takes on baddies and joins Rias' Peerage, though he remains human. Mash gave Ritsuka permission to have a harem and he slowly builds one up, though he's always thinking of her and missing her and Chaldea. Warning for Issei Hyoudou fans: Issei is Demoted to Extra, doesn't join Rias' Peerage, and whenever he shows up, he is a Butt-Monkey. The AO3 version is uncensored, while the fanfiction.net version removes sex scenes.
  • Now has a Tropes page
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Fate Grand Blunder by King of Beasts
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Multiple franchises
  • Status: Ongoing
  • Synopsis: What happens when heroes from popular media show up in Chaldea? Chaos, that's what. A series of one shots inspired by Fragments of Chaldea and all the other Alternate Grail Wars out there.
  • Comments: it is the same story as Fragments of Chaldea, a Slice of Life between Singularities, but with additional Servants from various medias, even from other fanfics such as Fate: Zero Sanity, and these Servants retains all the memories of their previous summons, canon or otherwise. the level of atmosphere of every chapter shifts depending on the focus character, from Tanya and Jeanne debating about God's benevolence, Captain America trains Midoriya and dating Nightingale, Hatsune Miku collabing with Lucio, to X23 having heart-to-heart talk with her dad after hearing an advice from Gawr Gura. it is the fun kind of mess.
Fate Grand Order: Hero of the future by RobertQuasar
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Halo
  • Status: Hiatus
  • Synopsis: Master Chief had died and was remembered as the finest warrior humanity ever produced and would be remembered centuries after his death. However, he is called to the past to save humanity from total extinction. Shouldn't be too hard it's just another mission to save humanity.
  • Comments: it is a good read, despite how dense the paragraphs at times.
Fate Grand Order: Kar en Tuk by Alter Atalanta
  • Crossover with Doom Eternal
  • Recommended by ultimomant
  • Status: Complete, now has sequel called Fate Grand Order: The Hunt For The Ancient Demon Gods.
  • Synopsis: Sometime after the Doom Slayer defeated the Icon of Sin, he and Samuel Hayden investigate a disturbance in Antarctica and stumble upon Chaldea shortly after it was bombed by Lev Lainur Flauros and the Incineration of Humanity begins. The Slayer takes Ritsuka and Mash's place in exploring and fixing the Singularities, which are threatened by the forces of Hell as well as Goetia's forces.
  • Comments: This fic ignores the events of The Ancient Gods DLC until the sequel. The Doom Slayer's main companion is Ruler Jeanne d'Arc, who slowly starts to fall in love with him. The Slayer manages to save Olga Marie Animusphere by converting her to an AI similar to Samuel Hayden, so she becomes part of Mission Control along with Samuel, Dr. Roman, and Da Vinci. Warning for Doom purists: the Slayer talks and is much friendlier than usual, but he is no less of a badass.
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Fate Grand Order: New Order series by Pheles65
  • Recommended by Number 1 Blazblue Fan
  • Crossover with Harry Potter, Miraculous Ladybug, The Rising of the Shield Hero, Percy Jackson and the Olympians, Spider-Man: Spider-Verse.
  • Status:
  • Synopsis:
    • Fate Grand Order: New Order: Harry Potter the twin brother of Charles Potter the Boy Who Lived received no attention from his parents after Voldemort attacks Godric's Hallow and was sent away. Now he is the new director of a security organization and the master of history's legends, myths, stories, and folklore. How would the Wizarding World react to this new development?
    • Anomaly I: Eden: The Age of Gods ended, I won't let it end here. In a world without Mages, my master has given me a chance to ruler over humans once more. With the power I will soon possess, I'll show Chaldea that they mess with the wrong Goddess.
    • Anomaly II: Miraculous - Part 1: Betrayed by my people, I have been granted vengeance. My master has granted us the power to reshape our empire into our own image. The feeble attempt from the Counter Force has failed and now serves the Eternal Empire. Oh Chaldeans, let us see who will be victorious in our Grandest Holy Grail War.
    • Anomaly II: Patricius - Part 2: Beyond the Human life, beyond from the Sea of Stars, a power beyond my reach shall soon be in my palms to control and use. In now a digitized World, I am one step closer to my goal of becoming a God. I shall use the power of the Gods to ensure my legacy, my Eternal Empire, and my ideal future for Humanity shall be eternal.
    • Anomaly III: Melromarc - Part 1: A shadow covers the rich Mana-filled land, a land plagued by hate and discrimination. A Hero framed by the Royal Family and their advisers, three factions on the brink of failure opposing their rule and their manipulated Three Heroes Roundtable. The time of the True Calamity is upon the land.
    • Anomaly III: Melromarc - Part 2: Escaped from a land of hate, a Roundtable Alliance shall be gathered to retake the Kingdom, the Hero shall rise above all. But at what cost would victory shall be paid?
    • Anomaly S: Bermuda: I knew that plan failed, trusting those incompetent rulers. That's why I will succeed for my master's plan, a world where Mystics remain and the Age of Gods flourish in the Modern Age. A sea filled with Mystics of all kinds, untouched by the Gods' hands. Their children, cast off and forgotten, an ideal army.
    • Sub-Anomaly I: Spiderverse: A simple distraction for the Chaldeans to enact my plans. The First Grail War in a World that does not need Heroic Spirits. Seven masters and Servants will fight to earn the right to achieve their wish, but what's a good distraction without a good and honest threat?
  • Comments: Instead of Ritsuka and Harry being separate persons they are one and the same. Leaving the Dursleys and joining Chaldea. After the lostbelts he returns to Hogwarts on a mission putting him in conflict with his estranged family and other forces at work.
Fate Grand Order: Slayer Chronicles by Seanathan311
  • Crossover with Doom (2016)
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: The female Ritsuka and her male counterpart Gudao are both Chaldea's last masters. In their first adventure in the Fuyuki Singularity, Gudao has Mash Kyrielight as his partner, while Ritsuka summons the Doom Slayer and his AI VEGA as Berserker. The Singularities are also threatened by the forces of Hell.
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Fate Grand/Order: Shard of Gold by Limbo
  • Recommended by: VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover with: Warhammer 40,000
  • Synopsis: The journey of a Psyker through the mad world of the Fate universe. Watch as he experiences the hell of the Grand Order and learns the hard way that it can always get worse. Maybe the real Grand Order was the trauma we collected along the way.
  • Comments: Mid-London, a Chaldean technician regains his memory as an agent of The Ordo Chronos Inquisition and decides to join the fray, his unique origins allow him to summon big-name Imperium figures as Servants.
Fate Joyous Order by auraofcalm
  • Crossover with: Fate/Extella Link
  • Recommended by: nitewind
  • Status: Ongoing
  • Synopsis: Following the events of Fate/Extella Link, Charlemagne was reincarnated as a human in the Grand Order timeline via Moon Cell shenanigans. Almost two decades later he decides to join an organization named Chaldea on a 'hunch', and when things predictably go awry he resolves to live up to his legend by smiting evil-doers and being as awesome as humanly possible.
  • Comments: Everyone is in character and Charlie in particular is hilarious and badass.
  • Tropes Page: Fate/Joyous Order
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Fate of the Lostbelt Kingdoms by ElementBrigade
  • Crossover with My Little Pony: Friendship Is Magic
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: When Chaldea fixes the Lostbelts, instead of being erased from existence, the inhabitants wake up in Equestria.
  • Comments: So far, only the Russian Lostbelt has arrived. It is nice that Princess Luna was quickly able to befriend Ivan the Terrible and Anastasia.
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Fate/Starry Night by Saikazo
  • Crossover with Fate/stay night
  • Recommended by Reppuzan
  • Status: Ongoing
  • Synopsis: Ritsuka Fujimaru isn't surprised to find himself on an unfamiliar rooftop after suddenly falling asleep. He's even less surprised to find himself in the middle of a Holy Grail War. Surrounded by familiar faces and new foes, he must unravel the mystery behind this alternate version of the Fifth Fuyuki Holy Grail War.
  • Comments: A work with a lot of heart, a strong grasp of character voices, and a slowly unraveling mystery. Ritsuka is a spunky, energetic, and fully-realized character. He leaves a delible impact on the setting and the characters with his actions while also properly sharing the spotlight. The tongue-in-cheek humor is also hilarious and it's clear that the author has a plan going forward.
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Fate Grand Dungeon by Parcasious
  • Recommended by ultimomant
  • Crossover with Is It Wrong to Try to Pick Up Girls in a Dungeon?
  • Status: Ongoing
  • Synopsis: After the Holy Grail War, Shirou and Rin settled in the Clock Tower and Rin became Zelretch's apprentice. One day, Zelretch transports Shirou to Orario and promises that if he can conquer the dungeon and reach the bottom level, he'll find something that can help him reunite with Saber in Avalon. To assist him in this quest, Zelretch gives him a power boost so he can summon and maintain seven Servants. The Servants are all demigods, causing a lot of chaos and confusion when the gods sense their presence and relationships.
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Fate: Grand Eroge by SpatialPhoenix
  • Crossover with The Gamer
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: In which Ritsuka has to use his new Dating Sim powers to save Humanity from Incineration. And with a set of abilities that have absolutely no direct combat value, that's easier said than done. What was he even supposed to do? Raise Flags with Goetia to unlock its Route? Take the Alien God out on a date? Sometimes, being an Eroge Protagonist was way more of a curse than a blessing...
  • Comments: Despite the title, the author said they will focus on romance instead of sex scenes. What's cool is that Ritsuka arrives in Chaldea about two weeks earlier than the original and manages to bond with Olga Marie and the Crypters, which will hopefully change their fates for the better.
    • The story has been rebooted. The original version can be found here.
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Fate: Souls and Singularities by Mundatorem
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: FromSoftware games, mostly Dark Souls (except Elden Ring)
  • Status: Ongoing
  • Synopsis: Singularities. Points in Human History which have become corrupted with the presence of a Holy Grail with the end result being the incineration of Humanity. However, it is not the Grails alone which are divergent. The Incineration comes about as one world, in particular, comes to an end. The two become linked as figures from a different Throne reach across the barriers between worlds
  • Comments: the story really shows how strong most of the From Software's Servants are, considering the world they came from are the equivalent of Fate's Age of Gods. Read as The Ashen one(shortened to Ash) becomes more animated and expressive as he serves Ritsuka. Also, Olga survives thanks to Ashen One's quick thinking.
FateGrand Family by Pheles65
  • Recommended by: VictorioMWolff-Haddock
  • Status: Ongoing
  • Crossover with: Harry Potter
  • Synopsis: Petunia and Vernon Dursley had enough of the boy named Harry Potter. His out-of-control magic in the household made them abandoning him in an Orphanage. Alone and scared, Harry felt like nobody loves him that is until a certain master visited the Orphanage. How will this go for Harry? Will he find the love he was yearning for?
  • Comments: After the Ordeal Call is over and Chaldea is rebuilt, Ritsuka & Mash decide to adopt a child when they encounter Harry in an orphanage, and decided to adopt him. Meanwhile, Sirius, being freed in an effort to find the missing "Boy Who Lived", decided to find out what happened to his fling, Akari Fujimaru, after her last letter said that he left her with a son in her.
Fates Collide by Brandocko
  • Recommended by ultimomant
  • Crossover with RWBY and related material in the Nasuverse
  • Status: Complete, has sequel called Lost to Dust in progress
  • Synopsis: Ruby contemplates what to do while on break from life as a Beacon student. She soon learns about an exchange program done at Chaldea Academy, the school Jaune's sister goes to. Wanting to meet her and experience life in a different setting, the silver eyed girl invites her friends to join her on this adventure.
  • Comments: There is no Holy Grail War, the Fate characters are simply living and studying on Remnant, having lived there all their lives.
  • Now has a Trope page
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Grand Dungeon Oratoria by Wernher von Braun
  • Crossover with: Is It Wrong to Try to Pick Up Girls in a Dungeon?
  • Recommended by ultimomant
  • Status: Dormant
  • Synopsis: Some of the most famous stories are those that tell the stories of heroes of the past; people that managed to carve their own names through their deeds in the annals of history, immortalized long after their demise. In the present, once merely figures inside of records, the journey of a young boy shall begin their stories anew.
  • Comments: The author admitted that this story was inspired by Heroic Myth, just with different Servants summoned, but hopes the story stands on its own merits.
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Hereafter by James D. Fawkes (Spacebattle Link, Ao3 Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with Worm
  • Status: Ongoing
  • Synopsis: Gold Morning was supposed to be the end. The capstone of a short, frenetic career. Taylor Hebert's fight was supposed to be over. But the end of one story is often the beginning of another, and when she's offered the chance to take part in a mission whose scale and scope feel so very familiar, there's only one answer she could give.
  • Comments: Taylor is evacuated to Chaldea and ends up working there, learning magecraft for two years before the Singularity F, and ended up becoming Ritsuka and Rika's (Gudako) senior and mentor.
  • Now has a tropes page.
Heroic Myth by harouki (link to Fanfiction.net)
  • Crossover with: Is It Wrong to Try to Pick Up Girls in a Dungeon?
  • Recommended by: Jobit
  • Status: Ongoing
  • Synopsis: In the distant past, before the Gods descended onto the lower world, Heroes made contracts with Spirits to fight the monsters born from the Dungeon. But with the descent of the Gods and the advent of the Falna, those Heroes and Spirits have passed onto legend. However, with the discovery of a certain object in the Dungeon, these legends will return to life once more.
  • Now has a Trope page
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How Far is Too Far? by ZDOtherworlder
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Ongoing
  • Synopsis: A chance meeting brings Midoriya Izuku into contact with a certain boy fresh off of his own perilous journey. How will fate unfold as a new force enters the world of pro-heroes? The Chaldea Security Organization takes center stage with its Master, Nathan Relnor, as the world of magic slowly bubbles to the surface.
  • Comments: Chaldea agrees that pro-hero is the right kind of retirement their last master of humanity deserves, with Servants disguising Chaldea as an international pro-hero group, while their non-servant employees retire peacefully. Will the catastrophe-molded Master be able to readapt to a more peaceful life?
Humanity's Last (Master) Counsellor by Morii Hikikko
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Youth Romantic Comedy Is Wrong, as I Expected
  • Status: Ongoing
  • Synopsis: Chaldea safeguards the world from all kinds of threats however, with the surge in the number of Servants, it became clear that the biggest danger at the moment is the relationships between these Heroic Spirits. In order to avert this crisis, Humanity's Last Master is assigned a new mission.
  • Comments: Hikigaya has the unenviable job of being the mediator between Servants due to his experience at his school's club.
HV-S01: Red Knight Redemption by ekaterina016
  • Recommended by ultimomant
  • Crossover with: Multiple franchises
  • Status: Complete
  • Synopsis: Alaya sends Heroic Vessel Shirou to Camelot to try to give it a happier ending. He decides the best way to do that is kill Morgan Le Fay and raise Mordred as a true hero so she won't rebel against Altria.
  • Comments: Characters from other franchises often make cameos, often as members of the Fae. The author admits to taking a little artistic license with both Nasuverse and Arthurian lore for the sake of a good story.
    • Now has a remake called HV-S01: Red Knight Redemption (Rewrite) which is inspired by Lostbelt 6, which begins with Heroic Vessel Shirou being reincarnated as a baby and being raised by female Merlin. Meanwhile, a child Morgan becomes angry when Merlin informs her that her little sister Altria is destined to rule, not her.
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HV-S02: Quests for the Golden Fleece by ekaterina016
  • Recommended by ultimomant
  • Crossover with: Multiple franchises
  • Status: Complete
  • Synopsis: Set in an alternate Ancient Greece where most of the heroes like Perseus and Heracles exist at the same time and most heroes join an adventurer's guild owned by Chiron. Alaya reincarnates Heroic Vessel Shirou into Jason's body with a mission to give tragic heroes like Atalanta, Medea, Heracles, and Medusa happier endings.
  • Comments: Again, there is a lot of artistic license and cameos, like Athena apparently being the Gorgon Sisters' mother. Jason with Shirou's mind and powers becomes one of the greatest heroes. Andromeda is a warrior and Perseus becomes a bit of a Butt-Monkey.
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HV-S03: Self-Incarnation by ekaterina016
  • Recommended by ultimomant
  • Crossover with: The Ambition of Oda Nobuna and other franchises
  • Status: Complete
  • Synopsis: Set in an alternate Ancient Japan where most of the heroes exist at the same time. Alaya reincarnates Heroic Vessel Shirou into Sengo Muramasa's body with a mission to give tragic heroes like Mochizuki Chiyome happier endings.
  • Comments: Some characters are replaced by their equivalents in The Amibition of Oda Nobuna where appropriate.
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I shall grant you your final wish by Ingol
  • Recommended by: Firedragonx
  • Crossover with: TwistedWonderland
  • Status: Ongoing
  • Synopsis: After saving the world, Fujimaru Ritsuka hears a call for help. She wakes up in a coffin. But it's fine, she had nothing better to do anyways (and let's be real, a magic school? that's cool)
Imaginary Seas by Ryuugi
  • Crossover with The Camp Half-Blood Series
  • Recommended by reppuzan
  • Status: Dormant
  • Synopsis: Percy has seen a lot during his travails as a demigod. But when he's summoned as a Servant to the Atlantis Lostbelt, he's not quite ready to learn that his dad is a giant robot, the Earth has been blown up twice, and the new armor his father outfitted him in has a Cleavage Window. He's done a lot of crazy things over the course of his life, but going against Olympus may be the craziest thing of all.
  • Comments: A fantastically detailed story that sends out ripples from planting Percy into the fifth Lostbelt on top of recognizing just how ridiculous he is from a mythological perspective. A great read for fans of both series, but chock-full of spoilers for them too. You Have Been Warned!
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Incarnation of Legends by ObsidianNoir
  • Crossover with Is It Wrong to Try to Pick Up Girls in a Dungeon?
  • Recommended by Reppuzan
  • Status: Ongoing:
  • 'Synopsis:'' The Far East. Rakia. Altena. Bell Cranel, humble boy from the mountains, had visited these and many other countries in the world, inhabited by incarnations of legends. Those with great fates are drawn to each other, those with lesser fates led by them, to the center of the world. Will he be swallowed by the gravity of Orario or will he make his mark, to reach the Throne at the peak?
  • Comments: Although the author takes some Broad Strokes with canon, the resulting story is original, thought-provoking, and all-around good fun. The butterflies of change are everywhere, and Bell's growth and lessons feel earned even before he sets foot in Orario after his little Road Trip Plot to get there.
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Kabbalah: The Passive Conqueror by Plot Devil
  • Crossover with Date A Live
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: Female Ritsuka, Mash, and a team of all female Servants go to investigate a new Singularity. They arrive in the Date A Live world and are quickly mistaken for Spirits by the AST and Ratatoskr, especially since their arrival caused a small spacequake.
  • Now has a Tropes page
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Kingdom Hearts: Grand Order by KingSora3
  • Recommended by ultimomant
  • Crossover with: Kingdom Hearts
  • Status: Ongoing
  • Synopsis: You all know the events that lead up to Sora's disappearance from his and his intense battle with Yozora. But what if instead of ending up in the city Quadratum, he ended up in the fabled Clock Tower, meeting the infamous Wizard Marshal. Guided by him, Sora ends up in a world where humanity is on the brink of destruction and must save it with Chaldea's Final Master.
  • Pairings: Sora/Kairi, Sora/Harem, Gudao/Mash, Gudao/Harem
  • Has its own page
League of Chaldea by Plot Devil
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: League of Legends
  • Status: Dead; last updated Aug 31st, 2021
  • Synopsis: Ritsuka dreamed of a world not similar to hers, legends that are not familiar to her, figures that are unknown to her history, and a world that is vastly different. Is it her imagination working at night or do they? Before she could doubt, -bah, tired of telling this... her life has already been strange!
  • Comments: This is based on various iterations of League's lore, with both Institute of War existing & making Ritsuka a Summoner, but Karen & Morgana are daughters of an Ascendant.
The Little Foreigner by Aeonalpha6
  • Crossover with Worm
  • Recommended by nitewind
  • Status: Ongoing
  • Synopsis: Or, a little girl finds herself in an unfamiliar city, makes new friends, and battles villains — while her “passenger” decides to shake up the local corner of the multiverse.
  • Now has a Tropes page.
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Mach Singularity by Mhyrloc
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Fire Emblem: Three Houses
  • Status: Ongoing
  • Synopsis: Fodlan is a odd place filled with conflict, mystery and malicious forces hidden behind smiling faces. When Ritsuka Fujimaru and his loyal Kouhai drop in unexpectedly, they find themselves involved due to the strangest of similarities.
  • Comments: Inspired by Demon in Fodlan, Ritsuka & Mash will exist alongside Byleth instead of replacing her.
Marvelous Exploits beyond the Walls! by MementoMori115
  • Recommended by ultimomant
  • Crossover with Attack on Titan
  • Status: Ongoing
  • Synopsis: Bunyan finds herself in Paradis Island. She easily deals with the Titans, but everyone mistakes her for a Titan Shifter.
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My Heroic Spirit Academia by TheAzureKnight
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: My Hero Academia
  • Status: Dead; last updated November 21st, 2019
  • Synopsis: Izuku Midoriya has never had any Special Quirks since he was a kid. But what if not only does Izuku get a powerful Quirk from his Hero All Might? but the ability to summon past Heroes from myths and legends? Join Deku! As he and his team of Heroic Spirits become the greatest Hero Team of all time!
Next Grand World by BigHead98
  • Crossover with: Kamen Rider Zi-O
  • Recommended by TrueChaos
  • Status: Ongoing
  • Synopsis: It should've ended there and then— the new world should have been created and everything restored. But fate still had more twists in store and now she, Olga Marie Animusphere with memories from her world and this one, must navigate the mysteries that lie in store for her.
Realm of Entwined Science and Sorcery - Academy City by ArmoredCoreNineBall
  • Crossover with A Certain Magical Index
  • Recommended by ultimomant
  • Status: Complete
  • Synopsis: The Chaldea crew investigate a new Singularity and come across Academy City, a city of advanced science under siege from both monsters and Stray Servants. The male Ritsuka Fujimaru and Mash Kyrielight enter the city and quickly make contact with its local hero Touma Kamijou, who to their surprise, is able to fight Servants despite being human because of his Anti-Magic right hand, Imagine Breaker.
  • Now has a Tropes page
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Returning Welsh Dragon Hero by Silver W. King
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: High School D×D
  • Status: Ongoing
  • Synopsis: The story of Issei Hyoudou and how he became a Devil, the Pawn of Rias Gremory is well known. But what if, on the day he died, rather than summoning Rias, due to the unintended machination of a shitty flower wizard, who would totally take credit for how well everything worked out, ended up summoned to Chaldea?

    Issei had his adventure, but now what does he do? How does the Hero live after his journey ends?
RWBY: Epic of Remnant by Doctor Snake Eater
  • Recommend by ultimomant
  • Crossover with RWBY
  • Status: Dormant
  • Synopsis: When the primordial Goddess Tiamat proves to be too much for Chaldea's second Master, she and her four closest Servants find themselves caught in her black mud. But due to the meddling of a certain fragile Avenger, the four Servants find themselves transported to another world entirely, with a comatose Master, and no option but to.. enroll in an academy? Damn it Angra Mainyu, why?
  • Now has a Trope page
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RWBY: Fate Disaster by D.N.Works
  • Crossover with: RWBY
  • Recommended by ultimomant
  • Status: Ongoing
  • Synopsis: Due to Jason's foolishness, a Rayshift malfunction causes himself, Medea Lily, Atalanta, and Hercules to be transported to Remnant. Unable to contact Chaldea, and with a limited supply of Mana, will Jason finally grow up and lead his old team to survival and victory? Or is this a disaster in the making?
  • Now has a Trope page
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Save scumming? It's on my character sheet. by Xorn
  • Crossover with Re:Zero
  • Recommended by: nitewind, starmag99
  • Status: Ongoing
  • Synopsis: Shortly after getting unceremoniously kicked back to Earth, Natsuki Subaru spontaneously combusts. A number of deaths later, he joins the Chaldea Security Organization. And then dies some more.
  • Comments: Everyone is in character, Subaru dies a lot, and all is well. Mostly.
  • Now has a Tropes page
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Servants of Remnant by Vaati Star
  • Crossover with RWBY
  • Recommended by ultimomant
  • Status: Dormant
  • Synopsis: An anthology of crossovers. The main one: When Chaldea is sabotaged and blown up with a bomb, the Servants wake up in different areas of Remnant, several years before RWBY Volume 1, and try to make the most of it.
  • Comments: While most of the Servants' stories are connected, the author admits some of them are in alternate timelines and standalone stories. The Servants end up changing events and Jason is surprisingly competent since he understands the seriousness of the situation and is determined to protect his comrades.
  • Now has a Tropes page
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Shadows of the Lostbelts by jabinker
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Halo
  • Status: Ongoing
  • Synopsis: No longer are they contained in one place, no longer are they just menace to humanity for now everyone shall shudder in fear as the shadows from the past, a monument to all of their sins come forth to take them.
  • Comments: Gravemind invades the Lostbelts through the Throne after a timeline accidentally summons it. Could've used better spacing.
Shattered Chains of Fate by Lore 55
  • Crossover with Bleach
  • Recommended by Xennone
  • Status: Ongoing
  • Synopsis: Through a misunderstanding and a poorly read application, Ichigo Kurosaki gets a chance internship at the Chaldeas Security Organization. It changes everything.
  • Comments: This takes place after Ichigo, Master of Chaldea, gets back home post-FGO. As such, instead of an actual 15-year-old with no genuine battle experience, the Ichigo that takes the mantle of Shinigami is a good few years older with many, many actual battles under his belt. His story in Chaldea is told through flashback snippets, and his interactions with the Servants are a delight.
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Still Better than Black Keys by OverMaster
Timeless Academia by Mad Crona
  • Recommended by Strawberry Fireball
  • Crossover with: My Hero Academia
  • Status: Ongoing
  • Synopsis: The Chaldea Security Organization. Dedicated to protecting the safety of the world, they venture into Earth's storied past to correct any Singularities that appear to threaten its stability. With humanity's greatest heroes at their side, they prepare to save everyone from a being that seeks to end the human race, and create a world of blissful indolence. So how did a boy with no magic, no family lineage, and not even one of these things called a "Quirk" end up as the Last Master of Humanity?
  • Comments: An AU where Izuku becomes the Last Master of Humanity. A mix of realistic effects of battle of Izuku's psyche as told by his journal entries and slice of life during the summoning interludes.
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To Relearn the Joy of Life by Magostera (FF.Net Link, Spacebattle Link)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Persona 5
  • Status: Completed
  • Synopsis: With the successful change of heart of Kaneshiro, Amamiya Ren felt the Phantom Thieves were doing pretty good. However, when a long absent returning student comes in and immediately tries to make her way into the group, Joker is far from imagining how deep the mysteries and burdens she carries run...
  • Comments: Ritsuka Fujimaru returns to Japan after finishing Part 1 (skipping Epic of Remnant and Part 2), and stumble upon the Phantom Thieves. With her power as Magus, she convert the Shadows based on the 72 Pillar demons into the actual thing and becoming her Servants.
The Trickster and the Grand Order by Kenjichan251
  • Recommended by: VictorioMWolff-Haddock
  • Crossover With: Persona 5
  • Status: Ongoing
  • Synopsis: People of power taken down. A false god shot. A fake paradise eradicated. One would think that for Ren Amamiya, leader of the Phantom Thieves, his adventures were over. However, a blood donation would turn his life upside down as he takes an offer from the Chaldea Security Organization - and once more fight for the fate of humanity.
  • Comments: Ren & Morgana takes Fujimaru's place as the last master. While people question them due to Persona being a Wrong Context Magic to the Chaldea, things get interesting when not only the Metaverse app still works in the Singularity, but it can also target Servants, sometimes with Reality Marble being synonymous with Palace...(Although Ren's charisma works with some of the Servants, it feels like Ren has to explain to the rest of them what a Persona is to gain their trust, making the bond feel imbalanced in the Servant's favor).
  • Now has a trope page.
Udon for the Drifting Warrior by Natsuofthe Dawn
  • Crossover with: Restaurant to Another World
  • Recommended by Link Season Master
  • Status: Complete
  • Synopsis: Look who's coming to dinner! Alternatively; Musashi's high standards for udon are about to get so much higher.
  • Comments: A charming little oneshot crossover about a certain wandering swordmaster walking through the door of Western Restaurant Nekoya. Musashi is just as playful as fans of the mobile game would expect, and the attention to detail regarding the food preparation as well as the meal itself is straight out of the anime/light novel.
Unsealed Fates by theantepenultimateriddle
  • Crossover with The Dresden Files
  • Recommended by Kat 2V
  • Status: Ongoing
  • Synopsis: Where trouble goes, Harry Dresden inevitably follows— or ends up in the middle of it, as things may be. So when trouble comes to Chicago in the form of a war for a powerful magic artifact that can grant wishes fought by summoned heroic and mythical figures, it's not a surprise that Harry gets chosen to be involved. What is a surprise is who he has to fight against... and who he will be forced to fight with. (Set around the time Proven Guilty is set in the original series.)
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What Was Created By God by WyverNine
  • Recommended by: ultimomant
  • Status: Ongoing
  • Crossover with: Percy Jackson and the Olympians
  • Synopsis: Set during The Battle of the Labyrinth. When the party is blown out of the volcano, they are separated and inexplicably find themselves in the Atlantis Lostbelt. They must learn the new rules and team up with the Servants to survive.
With Our Dying Breath by Tamzar (Link to Fanfiction.net)
  • Recommended by: VictorioMWolff-Haddock
  • Crossover with: Worm
  • Status: Hiatus
  • Synopsis: Taylor triggers with a connection to the Throne of Heroes and the ability to summon those within. The power also comes with the realisation that unless she can fix Earth-Bet's downward spiral, her timeline is scheduled to be pruned in the next Quantum Time Lock - which is only about five years away. That's a problem.
  • Comments: The dilemma Taylor faced with the options of Servants she can call. to do her plan, she needs a Servant that is strong but morally...flexible. the more evil and chaotic they are, the more collateral they can bring, but the more lawful and good keep disagreeing with her. not helping that she can hear them all inside her head.
Worm Grand Order by Simple Scribe
  • Recommended by ultimomant
  • Crossover with Worm
  • Status: Dormant
  • Synopsis: When Taylor Hebert was thrown into the locker, she was somehow transported to Chaldea at the beginning of events and becomes its only Master, bonding with her Servants and fighting through the Singularities. After doing this for three years, she finds a way back to Earth Bet, only to find that only a few hours have passed. With her best friend Mash Kyrielight and her many Servants, she decides to defend Earth Bet.
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