History Manga / AkumaNoRiddle

* AllPartOfTheShow: "Did Tybalt just bridal carry Mercuito into the audience and run off with Romeo? Wow! Black Class's interpretation of ''Theatre/RomeoAndJuliet'' is amazing!"

* BuryYourGays: An odd example since its a manga about lesbian assassins trying to kill one another, [[spoiler: but the two characters with most ShipTease, outside of the main couple, are Chitaru and Hitsugi, and they are the first characters [[KilledOffForReal to actually die on screen.]]]] Bonus points for being a huge RomeoAndJuliet ShoutOut incase you thought it was just platonic.

** It's eventually revealed that Kaiba is monitoring Tokaku's progress via the sercurity cams that The Chairmen/Nio use to watch the students.

* SlippingAMickey: Isuke serves drugged tea to Haru. [[spoiler: It doesn't work thanks to all the surgeries Haru has been through.]]

* YearX: Haru's birthday, is shown be to January 1st, 20XX, thus making the series take place in 20XXXV.

** It's eventually revealed that Kaiba is monitoring Tokaku's progress via the sercurity cams that The Chairmen/Nio use to watch the Students.

* FunnyBackgroundEvent: While the play is going on, two girls in the audiemce are ''very'' emotionally vested in the performance.

* ChekhovsClassroom: In the class's first visit to the academy's botanical garden, Mizorogi teaches them about bullfinches after he hears one, mentioning that its chirp sounds like a whistle. Later, Tokaku hears the bullfinch through her phone while trying to talk to Haru and figures out where she is.

** Tokaku and Haru could count as well.

* BuryYourGays: An odd example since its a manga about lesbian assassins trying to kill one another, [[but the two characters with most ShipTease, outside of the main couple, are Chitaru and Hitsugi, and they are the first characters [[KilledOfForReal to actually die on screen.]]]] Bonus points for being a huge RomeoAndJuliet ShoutOut incase you thought it was just platonic.

* FuroScene: In episode 3, while the characters discuss Shiena's glasses and [[spoiler: Takechi's]] status as a serial killer.

* AllPartOfTheShow: Did Tybalt just bridal carry Mercuito into the audience and run off with Romeo? Wow! Black Class's interpretation of ''Theatre/RomeoAndJuliet'' is amazing!
** Wow! It's almost as if they actually [[spoiler: died for real!]]

* FunnyBackgroundEvent: While the play is going on, two girls seem to be "very" emotionally vested in the performance.

** Tokaku's and Chitaru's pasts aren't very clear so far, but an incident in the former's past prevents her from killing people, while the latter [[spoiler:seems to have a dead mentor.]]

* BookcasePassage: One of the academy's seven wonders is a secret library section hidden behind on of these.

** [[spoiler: The Azuma family is a clan of assassins.]]

** Tokaku, Chitaru and pasts aren't very clear so far, but an incident in the former's past prevents her from killing people, while the latter [[spoiler:seems to have a dead mentor.]]

* IdiosyncraticEpisodeNaming: Each episode's title is a riddle that Kaiba sends Tokaku within the episode.

* ProfessionalKiller: Most of the assassins.

* RackFocus: Episode 3 uses this to switch focus from Takechi's delighted expression to the struggling butterfly she placed on a spiderweb.

* IWantMyBelovedToBeHappy: The length Hitsugi is willing to go in order to genuinely help Chitaru bring down Angel's Trumpet in the anime is considerable[[spoiler:... considerable, because Hitsugi ''is'' Angel's Trumpet]].

* BetaCouple: Chitaru and Hitsugi to Tokaku and Haru. More apparent in the manga where they have more scenes together. [[spoiler: Their story doesn't end well.]]

* EyeCatch: Featuring art of the same character featured in the ending, and some extra information about parts of the setting.

* RomanticTwoGirlFriendship: The relationship between Hitsugi and Chitaru. Episode 6, and there character song during the ending, calls into question if it really was this, or if they felt full on Lesbian Love.

* TheSevenMysteries: Myojo Academy has seven wonders, but only three of them are mentioned, and only one of those thee are investigated.

* [[spoiler:TogetherInDeath]]: Chitaru and Hitsugi in the anime.

* RomanticTwoGirlFriendship: The relationship between Hitsugi and Chitaru. [[spoiler: It was one sided from Chitaru.]] Episode 6, and there character song during the ending, calls into question if it really was this, or if they felt full on Lesbian Love.

* RomanticTwoGirlFriendship: The relationship between Hitsugi and Chitaru. [[spoiler: It was one sided from Chitaru.]] Episode 6, and there character song during the ending, calls into question if it really was this, or if [[spoiler: Chitaru felt ]] full on Lesbian Love.

* RomanticTwoGirlFriendship: The relationship between Hitsugi and Chitaru. Episode 6, and there character song during the ending, calls into question if it really was this, or full on Lesbian Love.

* RomanticTwoGirlFriendship: The relationship between Hitsugi and Chitaru. Episode 6's, and there character song during the ending, calls into question if this really was this, or full on Lesbian Love.

* TheSevenMysteries: Myojo Academy has seven wonders, but only three of them are mentioned, and only one of those thee are investigated.

** Tokaku, Chitaru and Kouko's pasts aren't very clear so far, but an incident in the former's past prevents her from killing people, while the latter two [[spoiler:seem to have a dead mentors.]]

* FanDisservice: Haru gets stripped down to her underwear, BoundAndGagged in epsisode 3. [[spoiler:She's also about to get tortured by Takechi in this same scene.]]

* ActionSurvivor: Haru.
* AlliterativeName: Isuke Inukai, Kouko Kaminaga, Suzu Shuutou.
* AnimalMotifs: Spiders for Takechi.

* AsleepInClass: Episode 2 features Isuke and Haruki sleeping through an audio lecture.
* AssassinOutclassin: Haru has survived many attempts on her life thanks to the [[HeroicSacrifice sacrifices of her family]].

* BareYourMidriff: Isuke.

* {{Bifauxnen}}: Chitaru.
** Also, Tokaku.
* [[BigBrotherInstinct Big Sister Instinct]]: Haruki doesn't take it well when Nio mentions her large family.
** Chitaru seems rather protective of Hitsugi and is almost never away from her side.

* {{Bokukko}}: Shiena and Hitsugi use ''boku'', and Shin'ya uses ''ware''.
* {{Bookworm}}: Shiena.
* BoundAndGagged: Haru, in episode 3.
* TheBully: Takechi. She really enjoys messing with her classmates, especially Banba and Shiena.
* CatSmile: [[TheTrickster Nio]], every now and then.
* CharlesAtlasSuperpower: Haruki, who can shatter bottles of nail polish with her bare hands by accident and carry around several wooden posts at once.

** [[spoiler: The Azuma family is a clan of assassins.]]
* CoolShades: Kaiba has shades on even while he's lecturing.
* CoveredWithScars: Haru from a lifetime's worth of assassination attempts.
* CurtainsMatchTheWindow: Tokaku and Chitaru.

* DeclarationOfProtection: Tokaku mentions her intention to switch to Haru's side twice: first to Haru, and then [[spoiler: the rest of the assassins.]]
* DemolitionsExpert: Explosives are [[spoiler:Kouko's]] preferred weapon.

* DualWielding: Takechi's good enough with scissors to use two at once. [[spoiler:She also uses a pair of saws after Tokaku interferes with her attempt at killing Haru.]]
* DulcineaEffect: Tokaku is pretty quick to risk death and [[spoiler: openly declare her intentions to a room full of killers]] for a girl she's only recently met.
* EmotionlessGirl: Tokaku.

* FashionableAsymmetry: [[SplitPersonality Mahiru/Shin'ya]] wears a black stocking on one leg and a white sock on the other.
* FingerlessGloves: Haruki puts on a pair of the leather, studded kind [[spoiler: before she tries to assassinate Haru.]]

* GenderBlenderName: Isuke has one, though she doesn't seem to mind.
* GirlishPigtails: Haru.
* GlowingEyesOfDoom: It's almost definitely just an artistic touch, but [[spoiler:Takechi's eyes take on a bit of a glow when she starts getting ''[[AxCrazy really]]'' violent]].
* [[HasTwoMommies Has Two Daddies]]: Again, Isuke.
* HealthcareMotivation: Part of the reason [[spoiler:Haruki]] has her job.

* ILied: [[spoiler:Takechi]], about a speech to Haru about how she's been protecting her from Shiena, and while she puts her to sleep with Gelsemium flowers.
* IcyBlueEyes: Tokaku. Sumireko has the same eye color, but she tries to put on a friendly front.

* IllGirl: Sumireko claims to be one.

* InLoveWithTheMark: Pretty much the entire plot.
* InSeriesNickname: Takechi calls Haru, "Harucchi".
* JapaneseChristian: Kouko seems to be this.
* KnifeNut: Tokaku.

* LickingTheBlade: Takechi does this with her scissors [[spoiler: before she starts cutting Haru.]]
* [[LikesOlderWomen Likes Older Men]]: Isuke only likes guys over forty, but she'll kill you for calling them old.

* ManInWhite: Kaiba.

* MassiveNumberedSiblings: When Isuke looks at what's implied to be a picture of Haruki's family, she counts up to six, though it's not clear if she was counting all family members or only the children. [[spoiler:Providing for them as well as their sick mother is apparently why Haruki is an assassin.]]

* {{Meganekko}}: Kouko, complete with a reserved personality.
** Shiena, too.

* NervousWreck: Mahiru when it's daytime.
* NeverGotToSayGoodbye: Haru to her mother, though by the time the story begins she seems to have gotten over it.
* NightmareFetishist: In the anime,[[spoiler:Takechi]] kills specifically for sexual pleasure.
* NoSenseOfDirection: Hitsugi.

* TheOjou: Isuke, complete with OjouRinglets.
** Sumireko also has the demeanor of one.
* OlderThanTheyLook: Hitsugi who is a high school student despite looking young enough to pass for elementary school.
* PerpetualSmiler: Sumireko is smiling is pretty much all of her appearances, and sometimes it comes off as a little sinister.
* ThePollyanna: Haru.
* ProfessionalKiller: Most of the assassins.
* {{Protectorate}}: Haru, to Tokaku [[spoiler:and formerly several of her family members.]]
* PsychoLesbian: Isuke apparently gets turned on by a drugged Haru, after seeing [[spoiler: she's covered in scars.]] And yes, she's a psychopath.
** [[spoiler: Takechi.]] AxeCrazy Serial-Killer/rapist

* ReverseGrip: One way Tokaku uses her knives.

* SerialKiller: [[spoiler: Takechi]], at least, doesn't seem to be paid for killing people.
* ShearMenace: Takechi just really likes cutting things...
* SlasherSmile: [[spoiler: Takechi]].

* SplitPersonality: Mahiru/Shin'ya Banba. By day a ShrinkingViolet, by night an aggressive psycho.
* SpotOfTea: Isuke is guilty of this. [[spoiler: She even tried to use tea to take out Haru.]]
** The other [[TheOjou ojou]], Sumireko is also shown to drink tea.
* StepFordSmiler: Haru is determined to smile despite pretty much everyone being out to kill her.
* TheStoic: Azuma.
* StoicSpectacles: Kouko. She's nearly as stoic as Azuma.
* SweetTooth: Nio is hinted to have a fondness for fruit buns, the school's specialty.
** Haruki is almost never without candy or [[BlandNameProduct Rocky]] sticks.
* ThirteenIsUnlucky: Haru is student no. 13 and Class Black's target.
* TokenMiniMoe: Hitsugi.
* TomboyAndGirlyGirl: Tokaku and Haru.
** Additionally, Chitaru and Hitsugi.
** Haruki and Isuke may also count, though Haruki is more of a TomboyWithAGirlyStreak.
* TrademarkFavoriteFood: Curry for Tokaku, at least in the manga.
* TheTrickster: Nio. She enjoys pressing everyone's buttons and patronizing them.
* {{Tykebomb}}: At least Tokaku, Isuke and Kouko have been training since childhood.
* VerbalTic: Nio ends a lot of her sentences with "suu".
* WhiteHairBlackHeart: Mahiru/Shin'ya Banba when it's nighttime.

* AxCrazy: Most of the assassins.

* CuteAndPsycho