History YMMV / FateKaleidLinerPrismaIllya

** The movie containing Miyu's flashback arc succeeded at gaining new fans of the series, thanks to him. [[spoiler:[[RescuedFromTheScrappyHeap They even consider Miyu's Shirou as]] ''[[RescuedFromTheScrappyHeap the best]]'' [[RescuedFromTheScrappyHeap Shirou portrayal in]] ''[[RescuedFromTheScrappyHeap any Fate]]'' series.]]

** Even if some fans believe his arc has overstayed its welcome, it almost unanimously agreed that [[spoiler:Alternate Shirou Emiya]] is made of pure awesomeness. Some have gone as far as to claim him to be one of the best incarnations of the character, rivaling not only the likes of [[spoiler:UBW and Heaven's Feel Shirou]], but even [[spoiler:Archer EMIYA]] himself. [[spoiler:The Shirou that was possessed by [[VideoGame/FateGrandOrder Sengo Muramasa]], however, might rival him in this department.]]

** [[spoiler:Miyu's brother]]. While general opinion is positive compared to [[spoiler: his counterparts in Illya's world and the original ''stay Night'' visual novel]], you'll find some folks saying he [[spoiler: merely upgraded to StockLightNovelHero]] given his circumstances.

** Even if some fans believe his arc has overstayed its welcome, it almost unanimously agreed that [[spoiler:Alternate Shirou Emiya]] is made of pure awesomeness. Some have gone as far as to claim him to be one of the best incarnations of the character, rivaling if not surpassing not only the likes of [[spoiler:UBW and Heaven's Feel Shirou]], but even [[spoiler:Archer EMIYA]] himself. [[spoiler:The Shirou that was possessed by [[VideoGame/FateGrandOrder Sengo Muramasa]], however, might rival him in this department.]]

** Most mythological beings in the ''Fate'' multiverse are Servants, so the myth walking around in the present day actually being ''the real deal'' was unheard of to characters and readers alike. The funny thing is that ''PRISMA☆ILLYA'' wasn't the only ''Fate'' series to do it: [[spoiler:''VideoGame/FateGrandOrder'' did the same thing with [[spoiler:Akuta Hinako/Yu Mei-ren]], her story beats matching [[spoiler:Erika Ainsworth/Pandora's]] almost point-for-point being an undying immortal hated by humanity for existing. What makes it truly amusing is that the ''PRISMA☆ILLYA'' and ''Grand Order'' chapters featuring these backstories '''very nearly released the same day'''[[labelnote:*]](November 25th, 2018 for the ''PRISMA☆ILLYA'' chapter, and just two days later for the ''Grand Order'' chapter)[[/labelnote]]; it's enough to make you wonder if Hiroyama and Nasu coordinated it so as not to step on each other's plot twists.

* HilariousInHindsight: The fact that Illya's series crossed over with ''Franchise/LyricalNanoha'', well-known for being a popular MagicalGirlWarrior spinoff of a visual novel, becomes this if you look at how they treated their source material's original players and families: while the ''Triangle Heart'' cast remained mundane and were eventually ignored after the series left Earth, the Einzberns and Emiyas almost met the same fate...[[spoiler:if it wasn't for them getting actionized alternate universe counterparts that eclipsed their "originals" in popularity, with the sub-arc explaining it even functioning as a pseudo-spinoff of its own. Sounding familiar? Sadly, Miyu's Brother doesn't get a Magical Boy form to complete the circle.]]

** As of mid-2023, ''3rei'' is still ongoing despite starting in ''2012''. Even cutting the ScheduleSlip out of the timeline, the number of manga issues ''3rei'' has had is almost double that of the previous two series ''combined''.

* FanficFuel: It's a MagicalGirl series and a ''[[Franchise/FateSeries Fate]]'' series rolled into one, heavily featuring sentient embodiments of the Second Magic for dimensional hopping [[spoiler:''and'' the Third Magic for ease of use]]. The fanfic potential is ''staggering'' even for a Nasuverse work, and that's without getting into {{Crossover}} territory both within the series ''and'' without. A good number of those crossovers are even official; if ''VisualNovel/FateStayNight'' and ''VideoGame/FateGrandOrder'' being such juggernauts, ''PRISMA☆ILLYA'' would easily have the most official crossovers in the series.

* FanficFuel: It's a MagicalGirl series and a ''[[Franchise/FateSeries Fate]]'' series rolled into one, heavily featuring sentient embodiments of the Second Magic for dimensional hopping [[spoiler:''and'' the Third Magic for ease of use]]. The fanfic potential is ''staggering'' even for a Nasuverse work, and that's without getting into {{Crossover}} territory both within the series ''and'' without. A good number of those crossovers are even official; if ''[[VisualNovel/FateStayNight]]'' and ''[[VideoGame/FateGrandOrder]]'' being juggernauts, ''PRISMA☆ILLYA'' would easily have the most official crossovers in the series.

** PlayedForLaughs. Illya being a lesbian rapist for Maid Miyu who doesn't seem to mind [[HarsherInHindsight stops being funny]] when you consider [[spoiler: she's an {{expy}} for Sakura from ''VisualNovel/FateStayNight'' who ''was'' conditioned to accept being raped.]]
** Really, just about everything with Miyu becomes this [[spoiler:when we find about about her world and her life with the Ainsworths.]] It starts as early as when she asks Illya why she's fighting. She's not happy about Illya treating collecting the cards like a game, [[spoiler:probably because of how the cards are used in her world, and by who.]]

** The movie containing Miyu's flashback arc succeeded at gaining new fans of the series, thanks to him. [[spoiler:[[RescuedFromTheScrappyHeap They even consider Miyu's Shirou as]] ''[[RescuedFromTheScrappyHeap the best]]'' [[RescuedFromTheScrappyHeap Shirou portrayal in]] ''[[RescuedFromTheScrappyHeap any]]'' ''[[RescuedFromTheScrappyHeap Fate]]'' series.]]
* LesYay:

* WTHCastingAgency: Creator/SentaiFilmworks's decision to dub in-house was widely criticized for replacing the standard Bang Zoom dub cast with inferior substitutes. Detractors have noted [[Creator/CynthiaMartinez Illya]] sounds more like [[Literature/{{Slayers}} Lina Inverse]] than a 10 years old little girl.

* CatharsisFactor: One of the minor complaints people who read the original visual novel or watched the anime adaptations back in the day was that Shirou never gave a proper beatdown to [[HateSink Shinji]] after all the shit he did to him, with Shinji always being finished off by other major villains. However here, [[spoiler: the Shirou from the world of Miyu, after installing the Archer class card into himself, gives Shinji one of the biggest [[CurbStompBattle trashings]] he has ever suffered in any Fate adaptation, even getting to punch his smug face (after [[KickTheDog he killed the Sakura from that world]], no less).]] To make it better, it was beatifully animated in the movie adaptation of [[spoiler: Miyuverse Shirou's flashback.]] To say that fans were incredibly happy would be an {{understatement}}, with some even saying it was the best part of the movie.

** Angelica, full goddamn stop. The fans are already clamoring for her when she first appeared with her awesome Gilgamesh Install, and her following appearances gave her plenty of time to shine, what with TheReveal about this series' background and her awesome fight vs. Kuro and [[spoiler:Miyu's brother]]. After her HeelFaceTurn, she's become even more popular as the fans jokingly said that she embodied "the perfect heroine for TYPE-MOON", with her combining traits of all three of ''Stay Night'''s heroines (blonde hair, GirlishPigtails, [[BoobsOfSteel big boobs]], stoic yet honorable nature, and older sister-like personality).

** ''Prisma Phantasm'' was the AffectionateParody everyone expected. What the fanbase ''didn't'' expect was the lion's share of the focus being given to Shinji and Kotomine, a pair of one-off characters that were already not well-liked. While some argue that Shinji's [[KickTheSonOfABitch deserved]] ButtMonkey status and Kotomine's {{Troll}} nature contributed well to the comedy, others were outraged that the regular cast of ''Prillya'' got so little screen time, especially with the ongoing CerebusSyndrome in the proper ''3rei'' manga.

* WTHCastingAgency: Creator/SentaiFilmworks's decision to dub in-house was widely criticized for replacing the standard Bang Zoom dub cast with inferior substitutes. Detractors have noted [[Creator/CynthiaMartinez Illya]] sounds more like [[Anime/{{Slayers}} Lina Inverse]] than a 10 years old little girl.

** As of mid-2023, ''3rei'' is still ongoing despite starting in ''2012''. Even cutting the ScheduleSlip out of the timeline, the number of manga issues ''3rei'' has had is almost double that of the previous two series' ''combined''.

** As of mid-2021, ''Drei's'' story is nowhere near completion despite starting in ''2012'', making it longer than the previous two arcs ''combined''.

** Still others are [[TooBleakStoppedCaring simply tired]] of ''3rei's'' [[ToneShift considerably more serious tone]] regardless of the characters involved, which the Miyu arc has only [[DarkerAndEdgier exacerbated further]]. Previously, ''3rei'' had paced its more serious drama and action with a plentiful sprinkling of comedy and Fanservice in between, even showing [[spoiler:the Ainsworths']] ([[FauxAffablyEvil Faux]]) AffablyEvil side, and if pacing didn't allow for such breaks there were often [[BreatherEpisode purely comedic side-chapters]] to give the reader a break. In contrast, this story has seen CerebusSyndrome in full effect, being a nonstop TraumaCongaLine for [[spoiler:Shirou]] approaching levels of bleakness that wouldn't be out of place in ''[[VisualNovel/FateStayNight Heaven's Feel]]'' or ''LightNovel/FateZero'', and [[ShooOutTheClowns without a single side chapter and hardly any appearances by the regular cast to break the tension]]. You'd find it hard to believe the series started as a lighthearted love letter to the MagicalGirl genre. Thankfully, the flashback doesn't last ''too'' long, and [[spoiler:Shirou]] even [[LampshadeHanging lampshaded]] how long it was. If that wasn't enough, the 5 minute short released with the ''Oath Under Snow'' Blu-Ray disc throws in even more lampshading.

* LikeYouWouldReallyDoIt: The death of [[spoiler:Chloe]]? Believable, foreshadowed all over the place, and [[DyingMomentOfAwesome suitably awesome]]. The sudden death of ''[[spoiler:Miyu]]'' and the abrupt [[spoiler:ApocalypseWow]] in the ''very next chapter''? The fanbase's WillingSuspensionOfDisbelief dropped like a lead balloon, which the author predicted and lampshaded in the chapter's footnote. [[spoiler:Sure enough, SetRightWhatOnceWentWrong was on the table a couple of chapters later.]]

* SophomoreSlump: ''2wei!'' is seen as the weakest in the anime adaptation. While Silver Link was faithful in adapting the ''2wei!'' manga, said manga went ''much'' harder on the funny moments and fanservice (which, as seen below, is unnerving at best). ''3rei!!'' was received a little better, but otherwise went too far in the other direction, having a much more serious tone that left less room for silliness.

* AlternateCharacterInterpretation: [[spoiler:The Ainsworths]], especially [[spoiler:Julian]]. Are they a group of [[WellIntentionedExtremist Well-Intentioned Extremists]] or sociopathic monsters willing to abuse a little girl for a plan that might not even work? While their backstory and explanations point heavily towards the former, [[KickTheDog some of the actions they do]] are without a doubt the second. Some fans may sympathize with them, but others share [[spoiler:Alternate!Shirou's]] desire to kill them as slowly and painfully as possible.

* FanNickname: Rather than its full title, the series is typically referred to as just "Prisma," "Prisma Illya" or even "Prillya" for convenience. Despite the franchise's traditional naming convention, you'd have trouble finding anyone who just called it "Fate/kaleid."

* JustHereForGodzilla: Quite a number of non-yuri fans intentionally jumped in after knowing that [[spoiler:Gilgamesh appears along with Gates of Babylon, Vimana and Ea.]]

* LesYay: Miyu develops a pretty obvious crush on Illya, who ([[IDidntMeanToTurnYouOn apparently unintentionally]]) doesn't do a whole lot to discourage it. Likewise with [[ScrewYourself Illya and Chloe]], then again, the yuri subtext mainly comes from Chloe. {{Crossover}} appearances featuring the three don't shy away from it, and some of them even double down on it.
** IWantMyBelovedToBeHappy: Miyu gives Illya a day-pass on being a magical girl, and takes on the final card alone, just to spare Illya. This plot unfolds [[AchillesInHisTent exactly as it always does of course]].

--> '''Ruby:''' Those two ingrates are ''made'' for each other!

* LesYay: Miyu develops a pretty obvious crush on Illya, who ([[IDidntMeanToTurnYouOn apparently unintentionally]]) doesn't do a whole lot to discourage it. Likewise with [[ScrewYourself Illya and Chloe]], then again, the yuri subtext mainly comes from Chloe.

** PlayedForLaughs. Illya being a lesbian rapist for Maid Miyu who doesn't seem to mind [[FunnyAneurysmMoment stops being funny]] when you consider [[spoiler: she's an {{expy}} for Sakura from ''VisualNovel/FateStayNight'' who ''was'' conditioned to accept being raped.]]

* ToughActToFollow: Not the anime itself, but Creator/SentaiFilmworks's [[TheOtherDarrin dub cast]]. As just about all veterans have a different dub voice, the new ones' success or failure is greatly influenced by how they compare to the original. And considering that [[Creator/CynthiaMartinez Illya]] sounds more like [[Anime/{{Slayers}} Lina Inverse]] than a 10 years old little girl, it's safe to say that it's not going well.

** Angelica, full goddamn stop. The fans are already clamoring for her when she first appeared with her awesome Gilgamesh Install, and her following appearances gave her plenty of time to shine, what with TheReveal about this series' background and her awesome fight vs. Kuro and [[spoiler:Miyu's brother]]. After her HeelFaceTurn, she's become even more popular as the fans jokingly said that she embodied "the perfect heroine for TYPE-MOON", with her combining traits of all three of ''Stay Night'''s heroines (blonde hair, MegaTwintails, [[BoobsOfSteel big boobs]], stoic yet honorable nature, and older sister-like personality).