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Fanfic / Fate Parallel Fantasia

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Fate/Parallel Fantasia is a Fate/stay night crossover fanfic written by troper Xelloss 08.

In Fuyuki City, the Fifth Holy Grail War has begun. Mages summon Heroic Spirits to serve as their familiars in a battle to the death for the Holy Grail. However, something irregular is occurring. Each time a Servant is summoned, a second Servant of the same class appears nearby. These False Servants are not heroes from history, but characters from other anime and manga series, beginning with Kiyomasa "Crow" Senji from Deadman Wonderland as False Saber and Homura Akemi from Puella Magi Madoka Magica as False Archer. The appearance of these additional Servants throws the War into chaos, as some make contracts with existing Masters while others bring new magi into the conflict. This is a Grail War with not one, but two Holy Grails up for grabs — both overflowing with the curse of all a world's evil.


The story has 64 chapters out so far and is still ongoing. It can be read here, and you can support it on Patreon here.

This fanfic includes examples of the following tropes:

  • A Death in the Limelight: False Rider, who has spent most of the story out of the limelight, gets a full chapter focused on her and then dies at the end.
  • Allergic to Evil: Caren Ortensia's condition, Masochistic Penumatic Automatism Diathesis, causes her to suffer pain when in the presence of evil spiritual entities. Because of this, she is forced to sit out the final battle.
  • All for Nothing: Zouken's schemes created the second Grail, as he believed one would be tainted and the other pure, but both are tainted, meaning even if he won, he still would not get his wish.
  • Armor-Piercing Slap: Spoofed when Shinji tries to slap True Rider across the face. She is unaffected while he hurts his hand.
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  • Artificial Limbs: False Assassin's Noble Phantasm is a prosthetic arm which grants her the ability to grasp spiritual bodies from a distance.
  • Asshole Victim: Shinji gets killed after threatening to rape False Rider.
  • Bag of Holding: One useful minor ability of False Archer's Noble Phantasm, Faust Buckler, is to provide her with infinite extradimensional storage space.
  • Bloody Murder: False Saber's Noble Phantasm generates swords from his blood, becoming more powerful the more he is wounded.
  • Chain Pain: False Avenger's Noble Phantasm consists of chains made from materialized curses from within the Grail. Anyone impaled by one of the chains is enslaved by False Avenger and corrupted by the curse of All Evils of This World.
  • Cloning Blues: Briefly contemplated by False Caster when she realizes that Servants are only copies based on information recorded in the Akashic Records; meaning that if she found a way to return to her own world, she might find the "real" her still there. She ultimately decides not to worry about it.
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  • The Corruption: "All Evils of This World", the curse which has corrupted the Grail and transforms any Servant exposed to it into their Dark form. The increased power is accompanied by the twisting of their minds, though True Rider finds that she's able to resist to an extent when False Avenger's attention isn't focused directly on her.
  • Deliberate Injury Gambit: Bazett sacrifices her left arm to get close enough to kill False Berserker.
  • Dying as Yourself: False Berserker regains his sanity when he dies, saying he's glad his nightmare is over.
  • Evil Is Not a Toy: False Avenger warns Kirei Kotomine and Gilgamesh that the two Holy Grails are not toys, and they are fools if they think they can use the curses within for their own benefit. They sneer and say they can handle it.
  • Evil Versus Oblivion: After clarifying that he is only an aspect of Angra Mainyu, True Avenger says he may be evil, but he will help the heroes stop the Grails from destroying the world because he likes the world.
  • Eye Scream: False Avenger's chains burrow into False Archer's eyes. Fortunately, she later heals good as new.
  • For Want of a Nail: The major thing that allowed all this to happen was that many years ago, Zouken stole the Jeweled Sword Zelretch from the Tohsaka family. After the Fourth Holy Grail War, Zouken used the Jeweled Sword's power to charge the Grail fragments he put inside Sakura and awaken the Black Grail. But since the Jeweled Sword deals with the Second Magic (alternate universes), this is what caused False Servants from different universes to be summoned.
  • Gas Leak Cover-Up: Gas leaks are used as a cover-up to explain people falling unconscious due to being drained of prana, mostly by True Caster and True Rider.
  • Geas: When Bazett joins the heroes, in order to prove that she is serious about no longer competing in the war, she permits Rin to place a geas on her which forbids her to make a new contract with any Servant. It is later revealed that Kirei Kotomine and Gilgamesh had put one on Bazett earlier that forced her not to reveal their plans and would have allowed them to control her, but False Caster steals the Noble Phantasm, The Ninnion Tablet, that maintained it and Bazett destroys it, freeing her.
  • Good Needs Evil: This is part of the speech Kotomine gives to Shirou during their first meeting: Shirou can only achieve his dream of becoming a hero if there is a villain for him to battle.
  • Healing Factor: Servants can recover from any injury that doesn't destroy their head or heart, provided they have enough of a supply of magical energy to draw on. This makes the Servants corrupted by False Avenger a significant threat, since unlike the heroic Servants they can draw unlimited energy from the Grail.
  • Hero Stole My Bike: Luvia and False Lancer steal an empty police car to get around for a bit before ditching it. Since the keys are missing, False Lancer points out she can drive it thanks to her Riding Skill, but she doesn't know how to hotwire it, so Luvia starts it with her magic.
  • History Repeats: True Caster's original Master attempts to abandon her for the younger and prettier False Caster, just like Jason betrayed her original self Medea for a younger and prettier princess. True Caster gets so angry about this happening again that she kills him.
  • Honor Before Reason: False Archer offers Rin a gun so that she can quickly kill the enemy Masters. Rin refuses, saying battles between Magi should be fought only with magic.
  • Immortality Seeker: Zouken Matou seeks the Holy Grail so that he can wish for immortality.
  • "It" Is Dehumanizing: Zouken refers to all of the Servants as "It".
  • It's Personal: Gilgamesh really wants to murder False Caster because she managed to steal some of his treasures. Fittingly, they face each other in the final battle.
  • Knife Nut: False Assassin's main weapon is a knife. It's not actually the weapon she's most skilled with, but rather the weapon which is most closely associated with her legend.
  • Knife Outline: Gilgamesh ends up accidentally doing this to False Caster with legendary weapons from his Gate of Babylon. He really was aiming for her, but overdramatically fired off a large volley of weapons rather than a single properly-aimed one, and he misjudged the size of his target due to her billowing cape.
  • Make Them Rot: False Caster uses a spell to make True Berserker's body decay. It kills him before God Hand brings him back to life and restores his body.
  • Mask of Power: One of False Rider's Noble Phantasms is a magical mask which obscures her identity, parameters, skills, and even her class; because she carries a spear, True Rider initially mistakes her for a Lancer.
  • Mercy Kill: True Archer decapitates False Archer when she gets corrupted by False Avenger's chains. Fortunately, her Soul Gem allows her to come back to life.
  • Noble Wolf: False Rider's Noble Phantasm summons one to serve as her mount, the wolf-goddess Moro.
  • No Guy Wants an Amazon: When Shinji meets Bazett, he thinks that she's ugly because of her muscles.
  • Older Than They Look: Illyasviel, due to the nature of her homunculus body. Shirou mistakes her for a small child when he first sees her, not knowing that she's older than he is.
  • One Curse Limit: Illyasviel cannot be affected by False Avenger's chains because she's already cursed by the evils of the Grail within her. Kotomine is not affected by the chains either because of the black heart given to him by Angra Mainyu. And True Avenger is immune to the chains because he is full of his own curse.
  • Nested Ownership: In addition to True Caster being True Assassin's Master, Shirou eventually transfers False Saber to False Caster.
  • Not Afraid to Die: Kotomine comments that he likely wouldn't survive when Angra Mainyu's curse is unleashed upon the world, but he doesn't care because seeing it unleashed is his life's goal.
  • Nothing Personal: Kotomine tells Gilgamesh how he has connections with almost all the other Masters like Shirou, Rin, and Bazett, and will enjoy making them suffer and die. Then he comments that he has never met Luvia before and doesn't know her, but she stands in his way, so he'll just snap her neck.
  • Power-Strain Blackout: False Caster faints after using her Ragna Blade technique.
  • Pretender Diss:
    • Gilgamesh tries to kill any False Servant he meets on sight, seeing them as nothing but fakers and trespassers on his world.
    • Kotomine dismisses False Avenger's claims of being a god, saying she's just a little girl who is scared of being alone.
  • Rasputinian Death: Zouken gets killed when False Avenger enslaves False Assassin and makes her stab him with her Mystic Eyes of Death Perception. He goes through extreme lengths trying to survive, but succumbs and dies in the end.
  • The Rest Shall Pass: The final battle has the heroes charging down a tunnel to try to reach the Greater Grail. True Avenger stays behind to hold off False Avenger. Rin, Luvia, and Bazett stay behind to hold off False Berserker. False Saber stays behind to hold off True Rider. False Archer stays behind to hold off False Lancer. True Saber and True Archer stay behind to hold off True Berserker. False Caster stays behind to hold off Gilgamesh. Finally, Shirou alone reaches and battles Kotomine.
  • Selfless Wish:
    • As she is dying, False Rider says she was originally planning to wish that the world be returned to nature. She amends her wish to ask that Gaia, the planet's will, and Alaya, the will of humanity to survive, be able to work together in harmony.
    • When he thinks they are all about to die or be enslaved, Shirou uses a Command Spell to ask that Saber be allowed to reach Avalon. It pays off as it allows him to access the Avalon within his own body, saving them all.
  • Sex Slave: When Shinji becomes True Rider's Master, he can order her to have sex with him whenever he chooses.
  • Shed Armor, Gain Speed: Saber removes her armor when fighting False Lancer, since her lance cannot be blocked by anything, so Saber would rather have mobility on her side.
  • Sinister Minister: Kirei Kotomine, as in canon, is a priest of the Church who is planning to bring about the birth of Angra Mainyu and unleash All Evils of This World.
  • Stating the Simple Solution: When Rin learns that False Archer can freeze time, she asks why she doesn't just freeze time and kill all the opposing Masters and Servants right now. False Archer points out all the reasons why this is not possible. Maintaining the freeze for even a few minutes costs a lot of prana, plus she can't attack someone without them unfreezing.
  • Stay with Me Until I Die: False Rider passes away with Moro, Illya, and True Berserker by her side.
  • Take Off Your Clothes: Rin drags Sakura into a bathroom and orders her to strip to prove she doesn't have Command Spells.
  • Time Stands Still: This is the power of False Archer's Noble Phantasm, Faust Buckler. It turns out to be less useful than expected, since if she touches an enemy (such as by attacking them), they become unfrozen along with her.
  • Token Evil Teammate: True Avenger is a Card-Carrying Villain through and through, but obeys his Master Caren to help the heroes.
  • Unblockable Attack:
    • False Assassin can destroy almost anything as long as she can see its lines of death.
    • False Lancer's lance can pierce anything, even souls.
  • Villainous Friendship: Gilgamesh and Kotomine are such good friends that Gilgamesh even admits that he will miss Kotomine when he eventually dies.
  • Volcanic Veins: Those chained by False Avenger develop pulsing red vein-like lines on their bodies.
  • Wham Episode:
    • Chapter 29: Shortly after True Caster summons True Assassin, False Assassin, who is Ryougi Shiki, appears and asks her to be her Master. After being rejected, False Assassin effortlessly kills her, then kills Souichirou Kuzuki when he attempts to avenge her.
    • Chapter 30: False Assassin effortlessly kills True Lancer, then Zouken contacts her and convinces her to become his Servant.
    • Chapter 31: Zouken reveals that there are two Holy Grails.
    • Chapter 32: True Avenger emerges without having been summoned.
    • Chapter 44: True Rider attempts to rescue Sakura from the Matou mansion, only to find she has been enslaved by False Avenger. False Avenger then enslaves her as well.
    • Chapter 60: False Avenger abducts Illyasviel and enslaves True Berserker.
    • Chapter 61: False Avenger enslaves False Assassin and kills Zouken.
  • The Worf Barrage:
    • As usual, Gae Bolg, True Lancer's supposedly unblockable and undodgeable spear, gets the short end of the stick. When he tries it on False Archer, she simply freezes time and leaves, so when time unfreezes, it has no target. When he tries it on True Berserker, it bounces off him because Gae Bolg is a B Rank Noble Phantasm and God Hand makes True Berserker immune to B Rank and lower attacks. He uses runes to temporarily upgrade the spear to A Rank and it succeeds in killing True Berserker, but God Hand brings him back to life. Finally, he tries it on False Assassin, but she uses Mystic Eyes of Death Perception to slice the spear in half with her knife.
    • False Assassin's Mystic Eyes of Death Perception don't work on Shirou because Avalon protects his body. It doesn't work on False Avenger either, because she is a god.
  • Worf Had the Flu: Since Shirou and Rin have two Servants each, the Servants are only about half as powerful as they would normally be because the Masters have to supply all of them with prana. True Archer notes that he doesn't have nearly enough prana to unleash Unlimited Blade Works.
  • The Worm That Walks: Zouken Matou's true form is a mass of worms possessing a corpse.
  • Wouldn't Hurt a Child:
    • Rin suggests killing Illyasviel to get rid of True Berserker, but both of her Archers refuse.
    • While False Caster is battling True Berserker, she has a shot at Illyasviel, but ultimately can't bring herself to kill someone who looks like a child.
  • Wrecked Weapon:
    • False Assassin effortlessly destroys Gae Bolg with her knife.
    • False Caster slashes False Lancer's Lance of Longinus with Ragna Blade, creating a huge gash and causing the Lance to temporarily abandon her.

Example of: