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YMMV / Akuma no Riddle

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  • Ass Pull:
    • The Everybody Lives finale. Especially since that means the five supposed deaths, two of which happened in episode 6, were all given an Unexplained Recovery, except Haru, who survived in the end because she had ribs made of titanium.
    • Some of the character's closing moments in the epilogue come out of nowhere with no development and really clash with how the characters were seen before that. For example, Mahiru is, by the epilogue, no longer afraid of the light and doesn't need to rely on Shinya anymore, even though her previous scene had her relying on Shinya and being incapacitated by strong light.
      • The manga fixes this by instead having her living with Hanabusa as a maid.
  • Broken Base:
    • The Everybody Lives ending has split fans, saying that it was not only an Ass Pull, but also served to make the rest of the show's events pointless. Others are more forgiving since the alternative would have been one hell of a Downer Ending to an already bleak series.
    • There is also some debate whether the anime should count as a yuri anime, since none of the hinted relationships rise above subtext. The one kiss in the anime only happens because Haru gives Tokaku oxygen so she won't drown.
  • Die for Our Ship: Several Suzu/Kouko fans tend to dislike the man Suzu had a previous relationship with, generally over how he abandoned her for another woman. Which is funny since the ending implies he is indeed dead.
  • Ensemble Dark Horse:
    • Mahiru and Shinya Banba, Nio, and Haruki are rather popular with viewers. In Haruki's case, it helps that she's an Expy of Kyoko.
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    • Sumireko was one of the least fan favorites until her attempt in episode 10, mostly because before she just sat around in the background and did nothing. Her episode immediately won her a sizable amount of love from fans.
    • Kouko also got a fair bit of this for being the only Class Black assassin to actually kill someone on-screen.
  • Epileptic Trees:
    • A popular theory was that all the assassins that failed to kill Haru were killed off screen, based on the cliché that failed assassins become the new target, and Otoya and Nio's final scene certainly looked to follow the theory. Otoya's return after breaking out of prison in Episode 10 proves the theory false. This was even further proven false when everyone, even the assassins who had supposedly died, were shown to be alive and well in the final episode.
    • Another theory is that since Chitaru drank Hitsugi's poison and died, Shiena, who was shot by Hitsugi with the same poison before, should have been killed by it as well. Again, the ending proved that to be false.
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    • An early theory about why Nio never showed any skin said that she was some sort of robot, in keeping with the futuristic theme, the fact that Otoya seemed terrified of her, and the fact that her Idiot Hair stayed perfect even at the pool.
    • The reveal that the Kuzunoha clan could create illusions, as well as the events of the ending, had half the fandom theorizing that Tokaku wished that everyone was alive and well in the end, and had that wish granted via the Kuzunoha's illusion powers.
    • Before the last few episodes revealed the whole deal behind Haru's situation, it was commonly speculated that she was a ruthless killer in disguise, a living training target for the assassins, or various other similar theories.
  • Evil Is Sexy: Since all the assassins are attractive, all of them count. Particularly Isuke, Haruki, and Sumireko when she changed out of her usual attire.
  • Fan-Preferred Couple:
    • Isuke/Haruki is the most popular ship out of the roommate/roommate pairings, as well as in general. It's likely because of their popularity that two became Official Couple in the final chapter of the manga.
    • Sumireko/Mahiru is also extremely popular, due to them getting huge amounts of subtext in the manga. The final chapter also changed their "Where Are They Now?" Epilogue from the anime so that two would get a Maybe Ever After ending.
  • Foe Yay: Not surprising, since the assassins are alll friendly enemies with each other to varying degrees. The most obvious instance of Foe Yay is Nio with Tokaku and Haru.
  • Hilarious in Hindsight: One of the rumors about Class Black is that it is a class of idol girls. Some of the assassins are voiced by idol seiyuus. Special mention goes to Takechi who is an Expy of Hibiki Ganaha and even has the same seiyuu. This also crosses with What The Hell, Casting Agency?, as Isuke was once a shy, androphobic idol girl. Doubles as a Casting Gag.
  • Launcher of a Thousand Ships: Otoya has been shipped with Shiena, Haru, Banba, Nio and Sumireko, and that's when she's only appeared in a few episodes.
  • Les Yay: While the anime only contains subtext and a single kiss (which is debatable in itself), the manga is far more forward with the characters' sexualities and the text of the relationships.
  • Memetic Badass: Sumireko, so much so that right after her star episode, fans immediately started comparing her to Steven Armstrong of Metal Gear Rising: Revengeance due to their revelations (and even how they revealed themselves) as being more just than normal humans. Steven showed himself to have nanomachines that can turn him into a giant hulk before he fought the cyborg Raiden. In Hanabusa's case, it's ironic because she showed herself to be a powerful cyborg. Hence, see Memetic Mutation below.
  • Memetic Mutation: "Nanomachines, Tokaku." Later changed to: "Titanium ribs, Tokaku."
  • Misaimed Fandom: A very minor example, though still stupid. Some fans are wholeheartedly convinced Otoya is a rapist despite the fact that at no point in the series was it said that she rapes her victims. In fact, it is outright states that she is a Sadist and kills because she feels good doing so. In fact, she is the type of Serial Killer that can only feel sexual pleasure through killing. In short, raping someone would do absolutely nothing for her, she has to kill to feel good.
  • OT3: The main trio of Tokaku/Haru/Nio, and then Hitsugi/Chitaru/Shiena.
  • Overtook the Manga: The anime caught up with the manga around episode 5. Unlike other examples of this, though, the anime is based on the manga's original drafts, meaning it still follows the manga's plot despite the manga chapters not even being out yet. The manga, however, features several scenes between characters that the anime doesn't have, has more fleshed-out characters, and is more forward with the characters' sexualities and orientations. Some scenes in the anime have been changed around, though the anime also features scenes (such as Kouko's backstory) that the anime doesn't have or doesn't elaborate on. As such, it's best to experience both to get the full story.
  • Portmanteau Couple Name: Tokaharu for Tokaku/Haru, Chitahitsu for Chitaru/Hitsugi, and Harusuke for Haruki/Isuke.
  • Shipping: All roommates are commonly paired together: Tokaku and Haru, Isuke and Haruki, Kouko and Suzu, Chitaru and Hitsugi, Shiena and Otoya, Sumireko and Banba. Nio, who doesn't have a roommate, is instead paired with the chairwoman Meichi, who she shares a lot of subtext with.
  • They Wasted a Perfectly Good Character: Out of all the assassins in the anime, Shiena is with the least characterization. Her Dark and Troubled Past of being bullied and her being a Bully Hunter are never brought up. You'll have to read the manga to know more about her. Shiena is also the only assassin who doesn't have an Image Song of her own, not even as a bonus track on the CDs.
  • They Wasted a Perfectly Good Plot:
    • The reveal that Nio has full-body Kuzunoha tattoos. Some fans were disappointed by this, believing that it was there to give her some Male Gaze fanservice and nothing else, especially since it was never fully explained or expanded on. Subsequently, they found Otoya's reaction to it, in an earlier episode, to be overexaggerating.
    • Kaiba's riddles that Tokaku periodically receives are revealed to be Kaiba encouraging her to become independent and find her own answers instead of relying on others. Some fans found this reveal to be rather lacking, especially the emphasis given on the riddles in the first few episodes.
    • Nio mentions in an early episode to Haruki that Haru was personally responsible for the slaughter of her own family. Nothing ever comes of this, and later episodes eventually debunk it, leaving some to wonder why it was brought up at all.
  • What an Idiot!:
    • Haru often takes her naivete to ludicrous levels. She's well aware that nearly everyone in the class is out to kill her, yet sees absolutely nothing wrong with trying to befriend said people whilst alone with them. In episode 3, she also doesn't alert Tokaku upon getting the 48 hour notice — as in, the only person who could conceivably protect her. This nearly gets her killed.
    • Taken further in episode 4, where Haru sees one of her phone straps - the ones she gave to her assassin classmates - attached to a book in the hidden library. Her first response is to pull it out, despite already knowing that whoever was behind the active notice was proficient with explosive traps.
    • For a supposedly competent and remarkable assassin, Tokaku makes some very, very stupid moves. One of these is to answer her phone whilst in the middle of a battle with another, very competent assassin, who was previously shown to be quite ruthless and cunning in her battling style.


Example of: