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* AbandonShipping: Saya and Tokizane ended up sunk [[spoiler:after it is revealed that Tokizane is a {{Jerkass}} who only joins the experiment just to get money and is disgusted on Saya's nature]].
* BrokenBase:
** By the first episode, the fans were already divided in camps between either ''BloodTheLastVampire'', ''BloodPlus'' and ''Blood-C'', debating on 'which' Saya they like the most and which story is better.
** The last two episodes really cause a more diverse response where some think that it's brilliant while others think that CLAMP has gone too far.
* DesignatedHero: Saya, particularly her actions in episode 6 and 8 where [[spoiler:she lets a number of people die before she could move in.]] This caused a lot of viewers to see her as the FailureHero and [[spoiler:her mourning over her dead classmates didn't help.]] This was justified in episode 11 and 12 [[spoiler:where Fumito drugged her which hinder her true abilities and personality.]] The movie averts this where Saya is competent enough to save a person.
* EnsembleDarkhorse: The Dog! A lot of people speculated that it's [[Manga/{{xxxHolic}} Kimihiro Watanuki]] due to his voice actors (both [[Creator/JunFukuyama Japanese]] and [[Creator/ToddHaberkorn English]]) and that he mentioned owning a shop where he grants wishes. And not to mention, the ONLY character who is on Saya's side and knows what the hell is going on.
* HarsherInHindsight: Saya's happy relationship with her father. She often sings how much she loves him. {{Nana Mizuki}}'s father died in 2008.
* HellIsThatNoise: Whenever a Elder Bairn eats someone...
* LoveItOrHateIt: The general consensus among the viewers.
* MagnificentBastard: [[spoiler: Fumito. He not only orchestrated the entire TrumanShowPlot, controlling Saya, Tadayoshi, the Elder Bairns and all the cast members, but also predicted Kanako's betrayal.]]
* MemeticMolester: The commentators on NicoNico makes Fumito into this, saying that he likes drugging the coffee and also the Guimauve he gives to Saya. [[spoiler: After [[MindScrew Episode 11]] and [[DownerEnding 12]], [[IKnewIt and they were pretty much right]] about that...!]]
* MemeticMutation: Blood-C: [[SoBadItsGood BEST COMEDY OF THE YEAR, MAN!]]
* {{Moe}}: Saya again. UpToEleven levels in the manga.
* {{Narm}}: Episode 12. [[spoiler: The whole town being slaughtered by the Elder Bairn, kind of loses its own bite, when the creatures doing it ''look'' like giant pink and cream rabbits with 'arms' as ears. Not to mention the bit where one stuffs a load of people into a giant bag, then another turns its hand into a blender-type thing. Would be horrific... if it didn't make a typical electric blender sound.]]
** The narm is so strong that it has reached meme levels: ''Best comedy of the year'', indeed.
*** Which is multiplied when you combine it with Yakety Sax.
** [[spoiler: Nono and Nene's definitive deaths]] become ridiculous when you recall all of the {{Panty Shot}}s they have as they get [[spoiler: gruesomely slaughtered]]. It may have been intended as FanDisservice, but still...
** Some of the Elder Bairns designs (like the train car marshmallow Elder Bairns from Episode 3 and the mentioned [[spoiler:bunny Elder Bairns]] from Episode 12) looked cartoonish and campy compared to the other Elder Bairns designs which looked creepy and sinister-looking.
** As [[http://www.youtube.com/watch?v=Xx_Fy_L2IGY this]] video shows, many of the deaths are so over the top they cross the line from {{gorn}} and go straight into narm.
* NauseaFuel: Episode 9 and episode 12.
* TheScrappy: Saya. In the first 4 episodes, a lot of people see her as a MarySue. Later, her failure to save people pretty much nails the mark. However, the last 2 episodes and the movie reverts this.
* SnarkBait: Watching this show on NicoNico Douga will result in tons of 'snarky' comments from members.
** 2ch and 4chan were just as snarky during the livestreams.
* TheyWastedAPerfectlyGoodCharacter:
** Though most of the characters are [[spoiler:hired by Fumito to act as Saya's "friends"]], the biggest one is Tadayoshi, who happens to [[spoiler:half-human, half-Elder Bairn]]. It would be interesting how much he has been under Fumito before the events of the TV series. [[spoiler:Only those who have read ''Blood-C: Izayoi Kitan'' would know what he is before he worked with Fumito and sadly, that manga hasn't been licensed or scanlated yet.]]
** This goes the same with Yuka. [[spoiler:She's a 28-year-old woman who only joins the experiment so she can be the governor of Tokyo and doesn't really care about the gruesome events in Ukishima.]] She even appears in the movie but only in two scenes [[spoiler:where she eventually got her wish in the end.]] It would have been interesting on what kind of role did she contributed to Fumito's organization and possibly, her interaction with Saya if only these two ever meet again.
* TheUntwist: The commentators on NicoNico are dead right on [[spoiler:Fumito]] being the mastermind, that the whole town being [[spoiler:a set-up for his experiment]] and that [[spoiler:he's drugging Saya with coffee and marshmallows which results to her memory loss]]. Most of the viewers already figure this out by episode 8 due to Fumito, [[spoiler:narrating with Saya in handcuffs as seen in the flashbacks]]. And when episode 11 rolls in, it doesn't come out as a surprise.
* WhatAnIdiot:
** Episode 8. Yeah, nice going Saya! Really good of you to [[spoiler: just stand there while an Elder Bairn started coming towards the class and not warn anyone to run. Plus, she just stands there and waits for about ''half'' the class to get killed off- before she even considers fighting the monster!]]
** Not to mention the students ''themselves'', who [[spoiler:just stand around dumbly, 'ogling' the Elder Bairn until it starts its major killing spree.]]
** [[spoiler: The Motoe twins, Tokizane, and Kanako.]] Yeah, there isn't any way that [[spoiler: trying to betray a MagnificentBastard, with a collection of deadly beasts at his disposal, could possibly end badly. No way at all...]]
* TheWoobie: SAYA!
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