''Please note that this page is currently in construction, and thus there are very few tropes listed, some of them in need of additional sorting.''

The Trinity is a [[FanFic fiction series]] written by a member of Beast's Lair forum called "Kieran."

The series is a retelling of Literature/HarryPotter books with the titular character, alongside two other ones readers didn't really care about, being replaced by three characters ([[FateStayNight Shirou EMIYA]] [[spoiler: Archer]], now known as Shirou von Einzbern; Takara Aozaki [[spoiler:Daughter of Shiki and Ciel Aozaki]] from [[spoiler:{{Tsukihime}}]], with her name unchanged; Jester, with his name becoming Galen Salvatore) from one of his earlier works. With Neville Longbottom being the one of whom the prophecy speaks after an infant Harry Potter's death at the hands of [[NamesToRunAwayFromReallyFast Lord Voldemort]], they are trying to fix what is left of the world they knew from books and movies, [[YouCantGoHomeAgain to have a place to live]].

There are currently six complete books, with seventh being written, out of seven planned, in order:
* [[http://forums.nrvnqsr.com/showthread.php/209-FF-Trinity-I-The-Stone-%28Type-Moon-Harry-Potter-X-over%29 Trinity I: The Stone]]
* [[http://forums.nrvnqsr.com/showthread.php/238-Trinity-II-The-Chamber-(Type-Moon-Harry-Potter-X-over) Trinity II: The Chamber]]
* [[http://forums.nrvnqsr.com/showthread.php/273-FF-Trinity-III-The-Prisoner-(Type-Moon-Harry-Potter-X-over) Trinity III: The Prisoner]]
* [[http://forums.nrvnqsr.com/showthread.php/292-FF-Trinity-IV-The-Tournament-(Type-Moon-Harry-Potter-X-over) Trinity IV: The Tournament]]
* [[http://forums.nrvnqsr.com/showthread.php/583-FF-Trinity-V-The-Chosen-(Type-Moon-Harry-Potter-X-over) Trinity V: The Chosen]]
* [[http://forums.nrvnqsr.com/showthread.php/929-FF-Trinity-VI-The-Blood-(Type-Moon-Harry-Potter-X-over) Trinity VI: The Blood]]
* [[http://forums.nrvnqsr.com/showthread.php/2617-FF-Trinity-VII-The-Twilight-(Type-Moon-Harry-Potter-X-over) Trinity VII: The Twilight]] (currently being written)
There are also preludes to the story, known as "[[http://forums.nrvnqsr.com/showthread.php/131-FF-Legacies-of-Fate-%28Type-Moon-Trinity-Prelude%29 Legacies of Fate]]" (the first one), and "[[http://forums.nrvnqsr.com/showthread.php/178-FF-Truth-and-Consequences-%28T-M-Whedonverse-X-over-Trinity-Zero%29 Truth and Consequences]]" (the second one) as well as an origin story set first [[http://forums.nrvnqsr.com/showthread.php/117-FF-Rainbow-of-the-Heart-%28Tsukihime%29 Rainbow of the Heart]](Specifically the sidestory "Legacies")

!!This fanfic contains examples of the following tropes:

* AfterTheEnd: The reason they were able to appear in Franchise/HarryPotter universe was Ilyasviel using her powers as [[PoweredByAForsakenChild the Holy Grail]] to save them after their fight against Illyria.
* AllYourBaseAreBelongToUs: Attempted and failed. See CurbStompBattle below.
* AlternateSelf: The premises consists of this really but special mention goes to [[spoiler: Kohaku, Hisui, Miyako Arima, and Akiha Tohno.]]
* Badass: Many, stand outs include [[FateZero Kiritsugu Emiya]], Sirius, Ciel and Shiki, [[MahoutsukaiNoYoru the Aozaki Sisters]], and of course the Trinity. New additions include[[spoiler: Neville, Ginny, Hermione, and Luna.]]
* BerserkButton: Some characters have them, most notable ones being those:
** Galen's BerserkButton is seeing any of his friends, but especially Hermione or Takara, getting hurt.
** Shirou's BerserkButton is seeing Ilyasviel, or any of his family members, getting hurt.
** Hermione's BerserkButton is doing anything to Galen and Takara, [[spoiler:as Kohaku learned.]]
* BetterToDieThanBeKilled: [[spoiler: Amelia Bones.]]
* BlackAndWhiteInsanity: Dumbledore's morality is [[BlackAndWhiteMorality one that only accepts white and black]], which proves to be very problematic when two out of three wizards capable of stopping the BigBad qualify as {{Anti Hero}}es, or {{Byronic Hero}}es.
* CannibalismSuperpower: [[spoiler: After being turned into a vampire by Kohaku poisoning her with Unicorn Blood, Hermione call borrow the abilities of those she drinks from. Because she drinks from Galen she can still use magic and drinking from Kohaku gave her a Metamorph Magus abilities.]]
* ChekhovsGun: Instead of letting Dumbledore destroy the philosopher's stone, the Trinity decided to [[spoiler: deposit it in Hermione's Gringott's vault]], with nobody outside of their group knowing they have it, [[spoiler: which later cures him of it and turns him into an Dire Wolf Animagus.]]
* CoolSword: Takara's sword is virtually a holy weapon, capable of smiting evil and even conjuring rains and cleaving [[HellFire Fiend Fyre.]]
* CurbStompBattle: The attempted raid on the Eizenburn Manor ended in a complete failure. This is why you do not mess with the family of the [[FateZero Magus Killer]]
* CursedWithAwesome: From practical perspective, this is what Galen's lycanthropy is most of the time. But until [[spoiler: they were able to give him improved Wolfsbane potion based on Snape's notes]], physical suffering when he changed outweighed any potential bonuses. And then there's the fact that [[spoiler: it will make him die from the strain before he reaches his fifties when magicals live for so much longer. At least until they cured him in Book 7.]]
** Even more so in case of [[NamesToRunAwayFromReallyFast Lord Voldemort]], [[spoiler: who had gained partial lycanthropy after Galen's blood was used to revive him in the 4th book]], resulting in the power of his unforgivable curses being increased. And since he had Snape with him, he didn't have to wait long for the cure.
** As of sixth volume, [[spoiler: Hermione [[TamperingwithFoodandDrink got fed]] [[PsychoSerum unicorn blood]], with [[OurVampiresAreDifferent horrifying results]]. Her new abilities allowed her to first notice mental tampering on Galen, and later penetrate Occlumency-protected mind to learn the location and defenses of a place where kidnapped Takara was held. And what was to be done to Takara and how to circumvent it, as well.]]
* DangerousForbiddenTechnique: [[SoulJar Horcruxes]], obviously.
** There is also Galen's Thunderbolt charm, which had almost become classified as the fourth unforgivable curse, and before he had perfected it, [[ExactlyWhatItSaysOnTheTin was very dangerous to the user]] because he tried to summon true lightning and most of the energy wasn't lost over a long distance as it would from the sky.
* DarkerAndEdgier: The whole series is a tad darker than the original. Surprisingly, nobody had died [[spoiler: until the sixth volume]].
* EnemyWithout: [[spoiler: In Book 7, Dumbledore's corpse is possessed by the Horcrux ring, much like the Diary intended to do, creating a second Voldemort that decides that there's only room enough for one of them.]]
* FakingTheDead: [[spoiler: Trelawney, Sirius, and Galen all have their deaths faked at one point or another.]]
* FateWorseThanDeath: [[spoiler: Aoko inflicted this on Kohaku, stating that while her body and mind were destroyed her soul was mostly intact...right until she got her hands to the schemer.]]
* [[spoiler: FatherIWantToMarryMyBrother: Ilyasviel chose Shirou to be her "chosen" one. It had been a major problem for them in the fifth book, since they could not marry if there was no proof that they weren't related, and if that had not happened Ilyasviel would've died from the backslash of her Veela nature.]]
* FightsLikeANormal: The Scarlet Seven and Kiritsurgu.
* FixFic: While the fiction itself had not been created to "fix" the events of the books, it does a great job at fixing various {{Plot Hole}}s in the original books.
* {{Foreshadowing}}: The identity of one of Shirou's parents had been foreshadowed by [[spoiler: his parseltongue ability]].
** [[spoiler: It was mentioned that if the Diary revived then there would be two Voldemorts running around and competing with each other. Guess what happens when the Horcrux ring takes over Dumbledore's Inferi?]]
** [[spoiler: The information dump on Vampires in Book 1, Chapter 4. Very useful considering what happens in Book 6.]]
* ForWantOfANail: Due to Ilyasviel's reality rewriting power, some facts had to be changed to accommodate the Trinity in the Franchise/HarryPotter universe.
** InSpiteOfANail: Happens sometimes when the universe wants to shed their reality rewrite, and always causes things to turn much worse then they were. For example, [[spoiler: because Snape died early there was nothing to stop the rot from consuming Dumbledore when he put on the ring, killing him and allowing the ring to possess him like the diary had intended to do Percy and Ginny, making there 2 Dark Lords competing with one another.]] ''Every year is bad, every other year is worse.''
* FrameUp: In book 5, [[spoiler: Snape tries to frame Galen for a werewolf attack on Ron on the night of a full moon, knowing that every knew he hated him. It partially fails as the gang decided to move him to somewhere more secure as a safety measure and the wounds weren't cursed, but it does out Galen as a werewolf and cost Snape Dumbledore's support.]]
** [[spoiler: Shin used Polyjuice potion to change into Ginny Weasely and then murdered Draco to frame it on her in front of witness so, if questioned they can honestly say they saw her kill him.]]
* HolyHandGrenade: The Thunderbolt Charm has a high-level of purity (possibly being divine thunder) so it serves as a bane of vampires. [[spoiler: The sword enchanted by it did much the same.]]
* IWantGrandkids: Veela aren't subtle about it.
* [[spoiler: LukeIAmYourFather: While it had not been stated clearly, it is implied, with evidence to back it, that Shirou's father is [[BigBad Tom Riddle]].]]
** [[spoiler: It had been revealed before that, whilst trying to prove he wasn't related by blood to the Einzberns, [[ParentalAbandonment that his mother in this universe is Aozaki Touko]], and that he is [[OlderThanHeLooks a few years older than his looks imply]].]]
* MeaningfulRename: [[spoiler: Shirou's full name changes to "Shirou Einzbern" when he [[FatherIWantToMarryMyBrother marries Ilyasviel]].]]
* NecessarilyEvil: [[spoiler: From destroying the Acromanculas to bombing Knockturn Alley in Book 7, Chapter 15 and blaming it on the Death Eaters, a lot of what the heroes do constitutes evil and claim lives but are ultimately for the benefit of others.]]
* NotBloodSiblings: Ilyasviel and Shirou, of course. [[spoiler: In fact, Shirou is Takara's cousin.]]
* OutGambitted: [[spoiler: The chessmasters of the series do it constantly, but a crowning moment goes to Neville who, upon finding out that Dumbledore arranged for Galen to be slipped Love Potions, arranged to have Amelia Bones take him down.]]
* PeggySue: A variation of this, the Trinity had prior knowledge of Literature/HarryPotter {{Canon}} when they first arrived, and thus were able to use it to their advantage when this universe was still similar to the one they knew. It later bit them back, when the world diverged too greatly from the one they knew for them to do anything with this knowledge.
** Their prior knowledge of both Literature/HarryPotter canon and the history of their original world still allowed them to have good guesses about the significance, motivations and allegiances of a number of people. Like the Gray Lady of Ravenclaw. And leads them to make an assumption later proven wrong, about Horcruxes[[spoiler:, namely that Nagini was never a Horcrux in the first place]].
* PragmaticHero: Kiritsurugu, of course, as well as the Trinity and the Scarlet Seven. Ranging from using guns to burning down the Acromancula nests preemptively.
* PregnantBadass: [[spoiler: Ilya, Book 6.]]
* PyrrhicVictory: Voldemort's attempt at the prophecy was foiled, his numbers reduced greatly as well but it cost Kiritsurugu his fingers on a hand that can't be reattached, several hundred lives of mundanes, witches and wizards alike.
* PyrrhicVillainy: [[spoiler:Amelia Bones did so much damage to the Ministry and killed herself before Voldemort could completely take it over that the losses he took barely were worth it and would set him back months.]]
* RedHerring: [[spoiler: The Triwizard Tournament cup in the 4th book.]] Following it allowed [[spoiler: Snape]] to get blood necessary to resurrect Tom Riddle.
* TakeAThirdOption: In the third book, the Trinity had to either allow Peter Pettigrew to run away, or to kill him. [[spoiler: They staged Sirius' escape, enabling him to kill Pettigrew in his human form, and thus both denying Riddle Pettigrew's help, and clearing Sirius' name.]]
* TamperingWithFoodAndDrink: Ron attempted SlippingAMickey to make Shirou sick. [[spoiler: Dumbledore was far more successful with Galen and a love potion to Tracey Davis.]]
* UnderestimatingBadassery: Voldemort underestimates the Trinity and their friends and family. [[spoiler: He stops in Book 6, recognizing them as a more immediate threat than Dumbledore.]]
* XanatosGambit / XanatosSpeedChess: Galen, Dumbledore, and Voldemort play a mean game.
* YouCantGoHomeAgain: None of the Trinity, nor [[spoiler: Ilyasviel]] can go back to their home world. Because of that, they have to work hard to save the world if they want to have a place to live. [[spoiler: Rin can theoretically go back with the Kaledostick, but decides against it.]]
* YouHaveOutlivedYourUsefulness: [[spoiler: The most prominent example, though far from the only one, being Severus Snape and Gildroy Lockhart as the Minister of Magic.]]
* ZergRush: The strategy employed [[spoiler: by Voldemort on the assault on the Weasley, Lovegood, and Eizbern homes in Book 6.]]