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The rest of the students\' parents are frustrated that they fell into Class E, not abusive.


''Assassination Classroom'' is currently serialized in ''Weekly Magazine/ShonenJump'' and licensed for English volume release by Creator/VIZMedia. Two [=OVAs=] premiered during the 2013 and 2014 Jump Super Anime Tours, and a live-action movie adaptation is slated for March 2015. Creator/{{Funimation}} has picked up the rights to stream the two cour TV anime adaptation, which is set to premier on January 9, 2015.

to:

''Assassination Classroom'' is currently serialized in ''Weekly Magazine/ShonenJump'' and licensed for English volume release by Creator/VIZMedia. Two [=OVAs=] premiered during the 2013 and 2014 Jump Super Anime Tours, and a live-action movie adaptation is slated for March 2015. Creator/{{Funimation}} has picked up the rights to stream the ongoing two cour TV anime adaptation, which is set to premier premiered on January 9, 2015.



* AbusiveParents: The majority of Class E suffers from this, though not all of them, [[spoiler: but by and far, Nagisa's situation is the worst. The entire reason that he is capable of reading people so easily, with a single glance, is because he's needed to learn how to do it in order to survive the monster that is his mother, who can go from zero to psycho in the blink of an eye. She also constantly tells him she wishes he was born a girl and makes him grow his hair long, despite the fact that he hates it, which could make all previous jokes about his androgyny a FunnyAneurysm. Nagisa's father isn't much better, but his is more ParentalNeglect, because despite knowing how crazy the mother can be, he just pretty much left his son to deal with it alone, only showing up once in a while.]]

to:

* AbusiveParents: The majority of Class E suffers from this, though not all of them, [[spoiler: but by and far, Nagisa's situation is the worst. The entire reason that he [[spoiler: Nagisa is capable of reading people so easily, with a single glance, is because he's needed to learn how to do it in order to survive the monster that is his mother, who can go from zero to psycho in the blink of an eye. She also constantly tells him she wishes he was born a girl and makes him grow his hair long, despite the fact that he hates it, which could make all previous jokes about his androgyny a FunnyAneurysm. Nagisa's father isn't much better, but his is more ParentalNeglect, because despite knowing how crazy the mother can be, he just pretty much left his son to deal with it alone, only showing up once in a while.]]



* ArmorPiercingSlap: Delivered the [[http://www.mangahere.co/manga/ansatsu_kyoushitsu/c095/15.html Koro-Sensei way.]]

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* ArmorPiercingSlap: Delivered the [[http://www.mangahere.co/manga/ansatsu_kyoushitsu/c095/15.html Koro-Sensei way.]]way]] after [[spoiler: the students get too confident in themselves, decide to disobey Karasuma's orders by trying out their new free-running skills in a civilian area, and end up injuring a bystander in the process.]]



* BlandNameProduct: In chapter 2, the K.Y. Times for the New York Times, and the Turkies for the New York Yankees.

to:

* BlandNameProduct: In chapter 2, the K.Y. Times for the New York Times, and the Turkies for the New York Yankees. The Pocky seen throughout the series is known as Pooky.



* CrazyPrepared: Koro-sensei's "[[GreatBigBookOfEverything guidebook]]s".

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* CrazyPrepared: Koro-sensei's "[[GreatBigBookOfEverything guidebook]]s".guidebooks]]".



* DoItYourselfThemeTune: The opening for the anime adaptation is sung by the voice actors of Nagisa, Karma, Kayano, Isogai, and Maehara.

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* DoItYourselfThemeTune: The opening for the anime adaptation is sung in-character by the voice actors of Nagisa, Karma, Kayano, Isogai, and Maehara.



* DynamicEntry: In chapter 86, Karma comes out of nowhere and pulls off a two footed kick against Shiro's goons, while Maehara takes out another in the background of the same panel with a one footed version.
* EarlyInstallmentWeirdness: Threatening the world is one thing, but the first chapter ends with Koro-sensei threatening ''his students' families''. Knowing him like we do now, that's an unthinkable action for him.
** That said, the threat was to counter the ideas certain students had that it was okay to ''[[MoralEventHorizon bully other students into effectively becoming suicide bombers]]''. Fortunately, bonding and character development within the whole class has made that threat effectively non-existent.

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* DynamicEntry: DynamicEntry:
** In his very first scene, Itona enters the classroom by casually walking [[ThereWasADoor straight through the back wall]].
**
In chapter 86, Karma comes out of nowhere and pulls off a two footed kick against Shiro's goons, while Maehara takes out another in the background of the same panel with a one footed version.
* EarlyInstallmentWeirdness: Threatening the world is one thing, but the first chapter ends with Koro-sensei threatening ''his students' families''. Knowing him like we do now, that's an unthinkable action for him.
** That said, the
The threat was made to counter the ideas certain students had that it was okay to ''[[MoralEventHorizon bully other students into effectively becoming suicide bombers]]''. Fortunately, bombers]]'', and bonding and character development within the whole entire class has have made that threat effectively non-existent.non-existent. However, knowing him like we do now, it was an extreme action to take.



* EvenEvilHasStandards:
** Professional standards no less. No assassin worth his salt wants to be known as the person who [[spoiler: murdered an entire class of middle-schoolers]], regardless of moral compunctions, because his name would be dirt to his contemporaries thereafter.
** In later chapters, Asano Jr. begins to believe that his father's teaching methods aren't right, and balks when his father, unsatisfied with Class A's [[spoiler: modest victory over Class E at the school festival]], suggests that he should have [[spoiler: achieved an ''overwhelming'' victory by sabotaging Class E's ramen restaurant and poisoning their food]]. As of the end of chapter 118, he begins to see the monster his father truly is.



* EvenEvilHasStandards: Professional standards no less. No assassin worth his salt wants to be known as the person who murdered an entire class of middle-schoolers, regardless of moral compunctions, because his name would be dirt to his contemporaries thereafter.
** In later chapters, Asano begins to believe his father's teaching methods aren't right, and balks when his father suggests that he should have sabotaged Class E's ramen restaurant by poisoning their food. As of the end of chapter 118, he begins to see the monster his father truly is.



*FreezeFrameBonus:
**The "S.A.A.U.S.O." logo on the students' knives and weapons is a detail featured only in the anime. Pause at the right time and you'll find that it stands for "Special Arms Against Unidentified Slimy Octopus".
**The English print in the newspaper article describing Koro-sensei's assault on the baseball game becomes ten times funnier in the anime.
--->'''Article''': ...to encounter such a situation when I was pitching in a good condition. What the hell was it?" I am embarrassed since my teammates make fun of me, saying "JAPANESE HEITAI" and my wife gave me a meaningful comment, "I envy you". I had hard time a little bit to recover...



* LettingTheAirOutOfTheBand: In Episode 2, gentle music accompanies the touching moment where Koro-sensei declares his dedication to his students. It quickly dies when Nagisa complains about the weird extra credit question on his notebook.



* LogicalWeakness: Assassination skills are all about getting the drop on a target, they are not meant for prolonged conflict. Most assassins then are far less effective at combat than their general competence level would suggest. Infiltration style assassins like Irina lose most of their effectiveness if their identity is revealed.

to:

* LogicalWeakness: Assassination skills are all about for getting the drop on a target, they are not meant for prolonged conflict. Most conflict, making most assassins then are far less effective at combat than their general competence level would suggest. Infiltration style assassins like Irina lose most of their effectiveness if once their identity is revealed.



* MeaningfulEcho:
** After Koro-sensei gets himself into a tangle after failing to solve a wire puzzle in less than a second, the Chairman replies, "Not everything in this world can be solved with speed". [[spoiler: Later in the story, Koro-sensei repeats this line to his students after revealing the mountainside oasis he built by damming a stream and letting it pool up overnight.]]
** Karasuma's first words to the students, in regards to Koro-sensei: "I'll cut right to the point. I want you to kill this monster!". Later repeated to Class E (in a metaphorical sense) by [[spoiler: Asano Jr., who is fed up with the Chairman's educational methods and wants to take him down during the second semester final exams.]]



* MoodWhiplash: The series' silly, comedic tone can swerve into a much darker one when you least expect it to.

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* MoodWhiplash: The series' silly, comedic tone can swerve into a much darker one when you least expect it to. Taken up a notch in the anime adaptation, which makes even the minor silly and the dramatic moments contrast each other to a greater degree than their manga counterparts.



* MortonsFork: How Takaoka tries to crush Karasuma's reputation as a teacher. Karasuma has the option to either send one of his under-trained pupils into a hopeless knife duel against Takaoka, or refuse the challenge and let Takaoka remain as Class E's new barbaric P.E. teacher.



* StatusQuoIsGod: Enforced by the Chairman, who developed the Class E system to give the rest of the school a motive to excel academically. When Koro-sensei tries to defy his system by challenging and motivating Class 3-E to score within the Top 50 on their first mid-term exams, the Chairman prevents them from excelling by adding several last minute questions to the exam and alerting the entire student body of the change ''except'' for Class E.

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* StatusQuoIsGod: StatusQuoIsGod:
**
Enforced by the Chairman, who developed the Class E system to give the rest of the school a motive to excel academically. When Koro-sensei tries to defy his system by challenging and motivating Class 3-E to score within the Top 50 on their first mid-term exams, the Chairman prevents them from excelling by adding several last minute questions to the exam and alerting the entire student body of the change ''except'' for Class E.



* TarotMotifs: Seen in Lovro's explanation of the Secret Killing Technique. The Chariot represents a powerful opponent, The Fool for the actual technique, and The Moon for an assassin.



* WeNeedADistraction: Phase 1 of Class E's revenge plot against the students who bullied Maehara: Nagisa and Kayano, disguised as an elderly couple, distract the bullies at a cafe so that Hayami and Chiba can shoot homemade laxatives into their drinks.

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* WeNeedADistraction: WeNeedADistraction:
**
Phase 1 of Class E's revenge plot against the students who bullied Maehara: Nagisa and Kayano, disguised as an elderly couple, distract the bullies at a cafe so that Hayami and Chiba can shoot homemade laxatives into their drinks.
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** He takes this up to the next level in Chapter 118 when, after having had enough of Class E garnering respect from the other students in the school, he declares that he's going to pull out ''all'' the stops for the finals to ensure that they are crushed once and for all.
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** In later chapters, Asano begins to believe his father's teaching methods aren't right, and balks when his father suggests that he should have sabotaged Class E's ramen restaurant by poisoning their food. As of the end of chapter 118, he begins to see the monster his father truly is.
Is there an issue? Send a MessageReason:
None


* GondorCallsForAid: During the school festival, many characters the students have met, both friend and foe (including some [[IGotBetter thought to have been killed off]]), stop by their classroom to try out their ramen restaurant.

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* GondorCallsForAid: During the school festival, many characters the students have met, both friend and foe (including some [[IGotBetter [[UnexplainedRecovery thought to have been killed off]]), stop by their classroom to try out their ramen restaurant.
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* GondorCallsForAid: During the school festival, many characters the students have met, both friend and foe (including some [[IGotBetter thought to have been killed off]]), stop by their classroom to try out their ramen restaurant.
Is there an issue? Send a MessageReason:
Just fixed my references to other tropes


* AbusiveParents: The majority of Class E suffers from this, though not all of them, [[spoiler: but by and far, Nagisa's situation is the worst. The entire reason that he is capable of reading people so easily, with a single glance, is because he's needed to learn how to do it in order to survive the monster that is his mother, who can go from zero to psycho in the blink of an eye. She also constantly tells him she wishes he was born a girl and makes him grow his hair long, despite the fact that he hates it, which could make all previous jokes about his androgyny a Funny Aneurysm. Nagisa's father isn't much better, but his is more Parental Neglect, because despite knowing how crazy the mother can be, he just pretty much left his son to deal with it alone, only showing up once in a while.]]

to:

* AbusiveParents: The majority of Class E suffers from this, though not all of them, [[spoiler: but by and far, Nagisa's situation is the worst. The entire reason that he is capable of reading people so easily, with a single glance, is because he's needed to learn how to do it in order to survive the monster that is his mother, who can go from zero to psycho in the blink of an eye. She also constantly tells him she wishes he was born a girl and makes him grow his hair long, despite the fact that he hates it, which could make all previous jokes about his androgyny a Funny Aneurysm. FunnyAneurysm. Nagisa's father isn't much better, but his is more Parental Neglect, ParentalNeglect, because despite knowing how crazy the mother can be, he just pretty much left his son to deal with it alone, only showing up once in a while.]]
Is there an issue? Send a MessageReason:
None


* AbusiveParents: The majority of Class E suffers from this, though not all of them, [[spoiler: but by and far, Nagisa's situation is the worst. The entire reason that he is capable of reading people so easily, with a single glance, is because he's needed to learn how to do it in order to survive the monster that is his mother, who can go from zero to psycho in the blink of an eye.]]

to:

* AbusiveParents: The majority of Class E suffers from this, though not all of them, [[spoiler: but by and far, Nagisa's situation is the worst. The entire reason that he is capable of reading people so easily, with a single glance, is because he's needed to learn how to do it in order to survive the monster that is his mother, who can go from zero to psycho in the blink of an eye. She also constantly tells him she wishes he was born a girl and makes him grow his hair long, despite the fact that he hates it, which could make all previous jokes about his androgyny a Funny Aneurysm. Nagisa's father isn't much better, but his is more Parental Neglect, because despite knowing how crazy the mother can be, he just pretty much left his son to deal with it alone, only showing up once in a while.]]
Is there an issue? Send a MessageReason:
None


->''"A group of junior high students are joyfully discussing an assassination. If you look at it normally, this is the pinnacle of madness."''


to:

->''"A group of junior high students are joyfully discussing an assassination. If ''
->''If
you look at it normally, this is the pinnacle of madness."''

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None


* OverlyLongName: The anime that Takebayashi recommends to Koro-sensei is titled, "Ore No Imouto Ga Totsuzen Hiroshima-Fan Ni Natta No Wa Kareshi No Eikyou Ni Chigai Nai Ken Ni Tsuite".[[note]]Regarding The Incident Of How There's No Doubt That My Little Sister Became A Hiroshima Fan Due To Her Boyfriend's Influence[[/note]], clearly poking fun at ''OreImo'' as well as the general tendency for Japanese light novels' LensmanArmsRace of long titles and annoying kanji.

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* OverlyLongName: The anime that Takebayashi recommends to Koro-sensei is titled, "Ore No Imouto Ga Totsuzen Hiroshima-Fan Ni Natta No Wa Kareshi No Eikyou Ni Chigai Nai Ken Ni Tsuite".[[note]]Regarding The Incident Of How There's No Doubt That My Little Sister Became A Hiroshima Fan Due To Her Boyfriend's Influence[[/note]], clearly poking fun at ''OreImo'' ''LightNovel/OreNoImoutoGaKonnaNiKawaiiWakeGaNai'' as well as the general tendency for Japanese light novels' LensmanArmsRace of long titles and annoying kanji.
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None

Added DiffLines:

* EvenEvilHasStandards: Professional standards no less. No assassin worth his salt wants to be known as the person who murdered an entire class of middle-schoolers, regardless of moral compunctions, because his name would be dirt to his contemporaries thereafter.
Is there an issue? Send a MessageReason:
None

Added DiffLines:

* LogicalWeakness: Assassination skills are all about getting the drop on a target, they are not meant for prolonged conflict. Most assassins then are far less effective at combat than their general competence level would suggest. Infiltration style assassins like Irina lose most of their effectiveness if their identity is revealed.
Is there an issue? Send a MessageReason:
None

Added DiffLines:

*DoItYourselfThemeTune: The opening for the anime adaptation is sung by the voice actors of Nagisa, Karma, Kayano, Isogai, and Maehara.
Is there an issue? Send a MessageReason:
None

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* DancingTheme: The anime's opening theme.


Added DiffLines:

* SurprisinglyGoodEnglish: Instances of written English (at least in the anime) are all well written and gramatically correct.

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* EverybodyKnewAlready: After [[spoiler: his first match with Itona]], Koro-sensei decides he has no choice but to reveal a shocking truth about himself. He is actually an artificially created creature. No one in the class is surprised since Koro-sensei already said he isn't an alien and an artificial being was the only explanation left.
-->'''Entire class:''' "Well, duh. And?"
-->'''Koro-sensei:''' "What a weak reaction! That was a pretty shocking thing to confess, wasn't it?!"



* EverybodyKnewAlready: After [[spoiler: his first match with Itona]], Koro-sensei decides he has no choice but to reveal a shocking truth about himself. He is actually an artificially created creature. No one in the class is surprised since Koro-sensei already said isn't an alien and an artificial being was the only explanation left.
-->'''Entire class:''' "Well, duh. And?"
-->'''Koro-sensei:''' "What a weak reaction! That was a pretty shocking thing to confess, wasn't it?!"
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None


--'''Koro-sensei:''' "What a weak reaction! That was a pretty shocking thing to confess, wasn't it?!"

to:

--'''Koro-sensei:''' -->'''Koro-sensei:''' "What a weak reaction! That was a pretty shocking thing to confess, wasn't it?!"

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* EverybodyKnewAlready: After [[spoiler: his first match with Itona]], Koro-sensei decides he has no choice but to reveal a shocking truth about himself. He is actually an artificially created creature. No one in the class is surprised since Koro-sensei already said isn't an alien and an artificial being was the only explanation left.
-->'''Entire class:''' "Well, duh. And?"
--'''Koro-sensei:''' "What a weak reaction! That was a pretty shocking thing to confess, wasn't it?!"



* TheUnreveal: After [[spoiler: his first match with Itona]], Koro-sensei decides he has no choice but to reveal a shocking truth about himself. He is actually an artificially created creature.
-->'''Entire class:''' "Well, duh. And?"
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None

Added DiffLines:

** That said, the threat was to counter the ideas certain students had that it was okay to ''[[MoralEventHorizon bully other students into effectively becoming suicide bombers]]''. Fortunately, bonding and character development within the whole class has made that threat effectively non-existent.
Is there an issue? Send a MessageReason:
None

Added DiffLines:

* EarlyInstallmentWeirdness: Threatening the world is one thing, but the first chapter ends with Koro-sensei threatening ''his students' families''. Knowing him like we do now, that's an unthinkable action for him.
Is there an issue? Send a MessageReason:
None

Added DiffLines:

* AbusiveParents: The majority of Class E suffers from this, though not all of them, [[spoiler: but by and far, Nagisa's situation is the worst. The entire reason that he is capable of reading people so easily, with a single glance, is because he's needed to learn how to do it in order to survive the monster that is his mother, who can go from zero to psycho in the blink of an eye.]]
Is there an issue? Send a MessageReason:
None


* HumansAreTheRealMonsters: Aside from his stated desire to blow up the Earth, Korosensei does nothing bad within the scope of the series. Humans, on the other hands, have more than proven themselves to be capable of being ruthless monsters.

to:

* HumansAreTheRealMonsters: Aside from his stated desire to blow up the Earth, Korosensei does nothing bad within the scope of the series. Humans, on the other hands, hand, have more than proven themselves to be capable of being ruthless monsters.
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None


* RecycledInSpace: It's ''GreatTeacherOnizuka''. With an alien.

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* RecycledInSpace: It's ''GreatTeacherOnizuka''.''Manga/GreatTeacherOnizuka''. With an alien.
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* HumansAreTheRealMonsters: Aside from his stated desire to blow up the Earth, Korosensei does nothing bad within the scope of the series. Humans, on the other hands, have more than proven themselves to be capable of being ruthless monsters.
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None

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* BlandNameProduct: In chapter 2, the K.Y. Times for the New York Times, and the Turkies for the New York Yankees.
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* ApocalypseHow: Class X. Imminent destruction of Earth if Korosensei is not stopped.


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* NoEndorHolocaust: Korosensei blows up most of the Moon. This does not affect life on Earth in any way. Tidal patterns continue normally as well.


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* SpellMyNameWithAnS: it took a while for the official readings for everyone's names to come out.
** Korosensei or Koro-Sensei? Opinions differ.

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* FiveRoundsRapid: Inverted. Irina's men dismiss airsoft weapons in favor of machine guns, not knowing that Korosensei's body dissolves lead but is blown to chunks by airsoft pellets made of special material. Generally speaking, knives and airsoft pellets brought him closer to being destroyed than nuclear weapons.



* KryptoniteIsEverywhere: Invoked. The Anti-Sensei material is cheap and easy to produce in large amounts, so Class 3-E and all the other would-be assassins introduce it to Sensei's life as much as possible in all forms, from bullets and knives to pudding and henna tattoos.



* LostInTranslation: The series uses a lot of puns that are really hard to translate, so lengthy translator notes have to be included with every chapter.



* OffscreenVillainy: Aside from his shameless perversion, Korosensei have not done anything that is morally wrong on-screen. And yet, he has all but destroyed the Moon in the backstory and plans to do the same to the Earth in close future. No info is provided on whether he massacred the combined armies of the world trying to kill him or would rather just NoSell their barrage.



* OverlyLongName: The anime that Takebayashi recommends to Koro-sensei is titled, "Ore No Imouto Ga Totsuzen Hiroshima-Fan Ni Natta No Wa Kareshi No Eikyou Ni Chigai Nai Ken Ni Tsuite".[[note]]Regarding The Incident Of How There's No Doubt That My Little Sister Became A Hiroshima Fan Due To Her Boyfriend's Influence[[/note]]

to:

* OverlyLongName: The anime that Takebayashi recommends to Koro-sensei is titled, "Ore No Imouto Ga Totsuzen Hiroshima-Fan Ni Natta No Wa Kareshi No Eikyou Ni Chigai Nai Ken Ni Tsuite".[[note]]Regarding The Incident Of How There's No Doubt That My Little Sister Became A Hiroshima Fan Due To Her Boyfriend's Influence[[/note]]Influence[[/note]], clearly poking fun at ''OreImo'' as well as the general tendency for Japanese light novels' LensmanArmsRace of long titles and annoying kanji.


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* ThouShaltNotKill: Anyone except for Korosensei is off-limits for class 3-E, even though he did forbid them explicitly from killing humans at least once, they were not really trying. Also, Korosensei himself, aside from the whole "destroy the planet in a year" thing, has not killed or significantly injured anyone, at least onscreen. Other assassins have no such restrictions, often mercilessly abusing Korosensei's desire to protect his students.
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* TheWorfEffect: Lovro the hitman dealer was a powerful, talented assassin during his younger days. Despite being currently retired, he's still skilled enough to effortlessly subdue Irina. [[spoiler:He's no match for the God of Death, a mysterious figure who abruptly kills Lovro within ten seconds of making his presence known to him]].

to:

* TheWorfEffect: Lovro the hitman dealer was a powerful, talented assassin during his younger days. Despite being currently retired, he's still skilled enough to effortlessly subdue Irina. [[spoiler:He's no match for the God of Death, a mysterious figure who abruptly kills Lovro within ten seconds of making his presence known to him]].him. Except [[NotQuiteDead not quite]]]].

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->''A group of junior high students are joyfully discussing an assassination. If you look at it normally, this is the pinnacle of madness.''


to:

->''A ->''"A group of junior high students are joyfully discussing an assassination. If you look at it normally, this is the pinnacle of madness.''

"''




Despite the outlandish and somewhat foreboding premise, ''Ansatsu Kyoushitsu'' (lit. "Assassination Classroom") is a lighthearted, action-packed comedy with several realistic, slice-of-life elements woven into its story. Imagine a less explicit ''Manga/GreatTeacherOnizuka'' mixed with sci-fi and espionage to get an idea of what you're in for.

to:

Despite the outlandish and somewhat foreboding premise, ''Assassination Classroom'' (titled ''Ansatsu Kyoushitsu'' (lit. "Assassination Classroom") in Japan) is a lighthearted, action-packed comedy with several realistic, slice-of-life elements woven into its story. Imagine a less explicit ''Manga/GreatTeacherOnizuka'' mixed with sci-fi and espionage to get an idea of what you're in for.



''Ansatsu Kyoushitsu'' is currently serialized in ''Weekly Magazine/ShonenJump'' and has been licensed for English release by Viz, starting December 2014. An OVA premiered in 2013 during the Jump Super Anime Tour, and a second one is set to premier for the 2014 tour. A two cour TV anime adaptation has been announced for January 9, 2015, along with a live-action movie slated for March 2015.

to:

''Ansatsu Kyoushitsu'' ''Assassination Classroom'' is currently serialized in ''Weekly Magazine/ShonenJump'' and has been licensed for English volume release by Viz, starting December 2014. An OVA Creator/VIZMedia. Two [=OVAs=] premiered in 2013 during the 2013 and 2014 Jump Super Anime Tour, Tours, and a second one is set to premier for the 2014 tour. A two cour TV anime adaptation has been announced for January 9, 2015, along with a live-action movie adaptation is slated for March 2015. Creator/{{Funimation}} has picked up the rights to stream the two cour TV anime adaptation, which is set to premier on January 9, 2015.



** Koro-sensei's face will change from "good" to "evil" (Pitch Black, Extreme Anger) if anyone tries to push his BerserkButton. Usually occurs when someone tries to hurt his students or when he sees Itona Horibe's tentacles.

to:

** Koro-sensei's face will change from "good" to "evil" (Pitch Black, Extreme Anger) if anyone tries to push his BerserkButton. Usually occurs when someone tries to hurt his students or when he sees [[spoiler: Itona Horibe's tentacles.tentacles]].



* BlindedByTheLight: During the battle at the concert hall, Gastro cranks up the stage lights behind him to make it hard for the kids to properly aim their guns at him.



* DeathCourse: The corridor [[spoiler: that leads from the prison up to the floodgate control room]] is packed with a large variety of automatic traps and lethal hazards set up [[spoiler:by the God of Death. To everyone's amazement, Karasuma maneuvers through the entire corridor with frightening ease.]]



** DeusExMachina: Averted. When he returns, everything was already over.

to:

** * DeusExMachina: Averted. When he returns, By the time [[spoiler: Koro-sensei reverts back from his helpless ultimate defense mode at the end of the Assassination Island arc]], everything was already over.



* EnemyEatsYourLunch: Koro-sensei tends to overreact when the food he brings back from overseas winds up lost or stolen. In his introductory chapter, Karma baits Koro-sensei into a trap by stealing the gelato he bought in Italy and eating it it front of him during a quiz.

to:

* EnemyEatsYourLunch: Koro-sensei tends to overreact when the food he brings back from overseas winds up lost or stolen. In his introductory chapter, Karma baits Koro-sensei into a trap by stealing the gelato he bought in Italy and eating it it in front of him during a quiz.



* {{Foreshadowing}}: Nagisa was built up to have a ''lot'' of hidden talent.
** [[spoiler:Confirmed in Chapter 41, which reveals that Nagisa has an ''exceptional'' talent for assassination]]. To be specific, his ability to [[spoiler:hide such bloodlust that it scares trained soldiers]].
** In chapter 28, Koro-sensei takes several students to see an American {{superhero}} movie, wherein the major PlotTwist involves the BigBad being revealed to be the heroine's brother. At the end of the chapter we meet Itona, Koro-sensei's AxCrazy "younger brother".

to:

* {{Foreshadowing}}: {{Foreshadowing}}:
**
Nagisa was built up to have a ''lot'' of hidden talent.
**
talent. [[spoiler:Confirmed in Chapter 41, which reveals that Nagisa has an ''exceptional'' talent for assassination]]. To be specific, his ability to [[spoiler:hide such bloodlust that it scares trained soldiers]].
** In chapter 28, Koro-sensei takes several students to see an American {{superhero}} movie, wherein the major PlotTwist involves the BigBad being revealed to be the heroine's brother. At the end of the chapter we meet Itona, [[spoiler:Itona, Koro-sensei's AxCrazy "younger brother".]]



* ForgottenBirthday: Due to the events of the athletic festival and the second mid-term exams, the students forget about Irina's birthday. To make it up to her, [[ShipperOnDeck they secretly arrange for Karasuma]] to present her with a birthday gift. [[spoiler: The plan backfires thanks to Karasuma's blunt insensitivity towards her feelings, setting up the stage for the God of Death to make his move.]]



* JapaneseRanguage: Invoked by Irina, who as the language teacher spends an entire lesson trying to get the students to avert this.

to:

* JapaneseRanguage: Invoked by Irina, Used a lot with regards to Irina Jelavic, the foreign assassin who as the language teacher spends an entire lesson trying to get the students to avert this.teaches English for Class 3-E.



** Later {{Invoked|Trope}} by Irina, who as the language teacher spends an entire lesson trying to get the students to avert this.



* MoreDakka: The "spray and pray" method was an early but hopeless tactic used by Class E against Koro-sensei. More creative uses of this strategy are eventually utilized, such as aiming the hail of gunfire ''indirectly'' at him to reduce his concentration, or [[spoiler: aiming it at a hostage, since his ability to defend others with his mach speed is relatively lackluster.]]



* OneHitKill: Lovro's "secret killing technique" is designed to turn the tide of a battle between a skilled combatant and an assassin to the latter's favor. It's extremely effective, but only works under very specific conditions. [[spoiler:Lovro teaches the skill to Nagisa, who eventually uses it to defeat Takaoka during their rematch at the climax of the Hotel arc]].
** RefugeInAudacity: The first step is to do something completely insane to get the enemy's attention ([[spoiler:like dropping your weapon]]). The second is to [[spoiler:completely ruin the enemy's concentration by ''clapping]]''. The reasoning is that doing this [[spoiler:buys you enough time to change a battle of attrition (soldier) into a surprise attack (assassin)]].

to:

* OneHitKill: Lovro's "secret killing technique" is designed to turn the tide of a battle between a skilled combatant and an assassin to the latter's favor. It's extremely effective, but only works under very specific conditions. [[spoiler:Lovro conditions.
** Lovro
teaches the basics of the skill [[spoiler: to Nagisa, who eventually uses it to defeat Takaoka during their rematch at the climax of the Hotel arc]].
** RefugeInAudacity: The first step is to do something completely insane to get When [[spoiler: the enemy's attention ([[spoiler:like dropping your weapon]]). The second is to [[spoiler:completely ruin God of Death demonstrates his advanced version of the enemy's concentration by ''clapping]]''. The reasoning is technique]], it's revealed that doing this [[spoiler:buys you enough time to change [[spoiler: pulling it off at just the right moment will paralyze the opponent for a battle of attrition (soldier) into a surprise attack (assassin)]].few minutes. It's appropriately dubbed the "clap stunner".]]



* PsychoSerum: Side effects of having tentacles transplanted into your head include pain, violent meltdowns, reduced intelligence, and single-minded tenacity. [[spoiler:When Itona finally had his tentacles removed, the lack of these side effects made him act like a completely different person]].

to:

* PsychoSerum: Side effects of having tentacles transplanted into your head include pain, violent meltdowns, reduced intelligence, and single-minded tenacity. [[spoiler:When Itona finally had has his tentacles removed, the lack of these side effects made makes him act like a completely different person]].



* RefugeInAudacity: The "secret killing technique" is essentially fueled by this trope. The first step is to do something completely insane to get the enemy's attention ([[spoiler:like dropping your weapon]]). The second is to [[spoiler:completely ruin the enemy's concentration by ''clapping'']]. The reasoning is that doing this [[spoiler:buys you enough time to change a battle of attrition (soldier) into a surprise attack (assassin)]].



* ShaggyDogStory: A mysterious person [[spoiler:infects Class-E with a virus that will eventually lead to a slow and agonizing death]]. Instead of handing over the helpless, immobile Koro-sensei in exchange for [[spoiler:the antidote]], the teachers and students [[spoiler:who have not yet succumbed to the virus]] spend an entire arc infiltrating a dangerous hotel full of bodyguards, assassins, and [[ArsonMurderAndJaywalking spoiled brats]] in order to steal it from the mastermind. The mastermind, [[spoiler:who turns out to be a vengeful Takaoka]], renders all of their efforts pointless by [[spoiler:blowing up the antidote in front of the class]].
** [[spoiler:Fortunately subverted. Unknown to Takaoka, the assassin he charged with infecting the class with the virus served them a seemingly painful yet harmless bacteria instead. Knowing that Takaoka never intended to hand over the antidote, he and the other two assassins decided that their reputations weren't worth perpetrating the mass murder of a bunch of middle school students]].
* ShoutOut: Has [[ShoutOut/AnsatsuKyoushitsu its own page]].

to:

* ShaggyDogStory: A mysterious person [[spoiler:infects Class-E with a virus that will eventually lead to a slow and agonizing death]]. Instead of handing over the helpless, immobile Koro-sensei in exchange for [[spoiler:the antidote]], the teachers and students [[spoiler:who have not yet succumbed to the virus]] spend an entire arc infiltrating a dangerous hotel full of bodyguards, assassins, and [[ArsonMurderAndJaywalking spoiled brats]] in order to steal it from the mastermind. The mastermind, [[spoiler:who turns out to be a vengeful Takaoka]], renders all of their efforts pointless by [[spoiler:blowing up the antidote in front of the class]].
** [[spoiler:Fortunately subverted. Unknown to Takaoka, the assassin he charged with infecting the class with the virus served them a seemingly painful yet harmless bacteria instead. Knowing
class]]. [[spoiler: Subverted when it's revealed that Takaoka never intended to hand over the antidote, he and the other two assassins decided that their reputations Takaoka's assassins, who weren't worth perpetrating nearly as sadistic and unprofessional as their boss, secretly swapped the mass murder of lethal virus with a bunch of middle school students]].
harmless stomach bug.]]
* ShoutOut: Has [[ShoutOut/AnsatsuKyoushitsu The series has so many shout-outs to current events, video games, and manga that it [[ShoutOut/AssassinationClassroom needed its own page]].



* StormingTheCastle: The invasion of an enemy home base is the focus of the series' longer arcs. The first one has the students [[spoiler: sneaking into a hotel to steal an antidote]], and the second has them [[spoiler: storming the God of Death's hideout to save Irina]].



* TheUnreveal: After fighting Itona, Koro-sensei decides he has no choice but to reveal a shocking truth about himself. He is actually an artificially created creature.

to:

* TheUnreveal: After fighting Itona, [[spoiler: his first match with Itona]], Koro-sensei decides he has no choice but to reveal a shocking truth about himself. He is actually an artificially created creature.



* WeaponizedAnimal: There are dobermans trained to fire the machine guns strapped to their backs in [[spoiler: the God of Death's hideout.]]



* TheWorfEffect: Lovro the hitman dealer was a powerful, talented assassin during his younger days. Despite being currently retired, he's still skilled enough to effortlessly subdue Irina. [[spoiler:He's no match for the God of Death, a mysterious figure who abruptly [[NotQuiteDead kills Lovro]] within ten seconds of making his presence known to him]].
* YourSizeMayVary: Used artistically, particularly with [[spoiler:Nagisa and Takaoka]] to emphasize the DavidVsGoliath aspect of their fight. Sometimes they would be drawn close to their actual relative proportions, sometimes Takaoka would look twice as tall as [[spoiler:Nagisa]].

to:

* TheWorfEffect: Lovro the hitman dealer was a powerful, talented assassin during his younger days. Despite being currently retired, he's still skilled enough to effortlessly subdue Irina. [[spoiler:He's no match for the God of Death, a mysterious figure who abruptly [[NotQuiteDead kills Lovro]] Lovro within ten seconds of making his presence known to him]].
* YourSizeMayVary: Used artistically, particularly with [[spoiler:Nagisa and Takaoka]] Often used artistically to emphasize the DavidVsGoliath aspect of the fights between Class E and their fight. opponents.
** Very prominent with [[spoiler:Nagisa and Takaoka]].
Sometimes they would be drawn close to their actual relative proportions, and sometimes Takaoka would look twice as tall as [[spoiler:Nagisa]].
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Despite the outlandish and somewhat foreboding premise, ''AnsatsuKyoushitsu'' (lit. "Assassination Classroom") is a lighthearted, action-packed comedy with several realistic, slice-of-life elements woven into its story. Imagine a less explicit ''Manga/GreatTeacherOnizuka'' mixed with sci-fi and espionage to get an idea of what you're in for.

to:

Despite the outlandish and somewhat foreboding premise, ''AnsatsuKyoushitsu'' ''Ansatsu Kyoushitsu'' (lit. "Assassination Classroom") is a lighthearted, action-packed comedy with several realistic, slice-of-life elements woven into its story. Imagine a less explicit ''Manga/GreatTeacherOnizuka'' mixed with sci-fi and espionage to get an idea of what you're in for.

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Moved from \"Ansatsu Kyoushitsu\"


[[redirect:Manga/AnsatsuKyoushitsu]]

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[[redirect:Manga/AnsatsuKyoushitsu]] [[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/brvwt7gccaaica7_3249.jpg]]
[[caption-width-right:350:[-Just another day in Class 3-E.-] ]]

->''A group of junior high students are joyfully discussing an assassination. If you look at it normally, this is the pinnacle of madness.''


Every morning, the students of Kunugigaoka Middle School's Class 3-E greet their sensei (aptly nicknamed [[MeaningfulName Koro-sensei]]), a bizarre, octopus-like alien that can move at a top speed of mach 20, with a massive firing squad.

This super creature was responsible for the destruction of the moon, rendering it forever into a crescent shape, and has announced that he plans do the [[EarthShatteringKaboom same thing]] to the earth in exactly one year. Koro-sensei has grown bored of the world governments’ [[CoolPlane futile]] [[HighSpeedMissileDodge attempts]] [[MoreDakka at killing him]], so he strikes them an odd deal: permit him to be Class 3-E’s homeroom teacher, and he’ll allow its students to try and kill him however they’d like to. Can the students successfully take Koro-sensei down and save the world despite the fact that he’s very cunning, [[Main/HealingFactor nearly invincible]], and definitely [[ArsonMurderAndJaywalking the best teacher they've ever had]]?

Despite the outlandish and somewhat foreboding premise, ''AnsatsuKyoushitsu'' (lit. "Assassination Classroom") is a lighthearted, action-packed comedy with several realistic, slice-of-life elements woven into its story. Imagine a less explicit ''Manga/GreatTeacherOnizuka'' mixed with sci-fi and espionage to get an idea of what you're in for.

The author, YuuseiMatsui, is also the creator of ''Manga/MajinTanteiNougamiNeuro'', which deals with similar ideas, mainly a supernatural creature with BlueAndOrangeMorality who's ultimately bettering the people it comes across. The difference is where Neuro was protecting his food source, Koro-sensei is trying to better his students by working in the killing arts as a teaching tool. [[CrazyEnoughToWork And it works]]. Of course, there is the ''slight'' problem of him planning to destroy the world...

''Ansatsu Kyoushitsu'' is currently serialized in ''Weekly Magazine/ShonenJump'' and has been licensed for English release by Viz, starting December 2014. An OVA premiered in 2013 during the Jump Super Anime Tour, and a second one is set to premier for the 2014 tour. A two cour TV anime adaptation has been announced for January 9, 2015, along with a live-action movie slated for March 2015.

Place all character-related tropes in the [[Characters/AnsatsuKyoushitsu character page]].

!!This series provides examples of:
* AbortedDeclarationOfLove: Despite being a professional at the art of seduction, Irina fails to fully confess her feelings towards Karasuma. [[ShipperOnDeck Her students]] don't take this too well.
* ActionBomb: {{Deconstructed|Trope}} in the very first chapter, when Nagisa tries to blow up Koro-sensei at point-blank range using a makeshift pellet grenade hidden around his neck. This makes Koro-sensei absolutely furious, even though he (and Nagisa, for that matter) escapes unscathed. Surprisingly, he isn't outraged over the fact that he was almost duped by a mere student--in fact, he ''praises'' the plan for its ingenuity and Nagisa in particular for flawlessly executing it. [[Main/EvenEvilHasStandards What disgusted Koro-sensei]] was that Terasaka, the student who came up with the plan, coerced Nagisa into doing it for him because he knew that the explosion was strong enough to severely injure whoever carried it out.
* AnswerCut: In Chapter 52.
-->"There isn't a single student stronger than him in this school." ''[speaking with regards to [[spoiler:the Chairman's son]]]''
-->''[cut to a yawning Karma]''
* ArcSymbol: The crescent moon on Koro-sensei's tie. It's often used as a reminder of just how powerful Koro-sensei is.
* ArmorPiercingSlap: Delivered the [[http://www.mangahere.co/manga/ansatsu_kyoushitsu/c095/15.html Koro-Sensei way.]]
* AppliedPhlebotinum: The guns, grenades, knives, bullets, etc. used by the students are made of a specially-made substance harmless to humans, but on contact cause Koro-sensei's cells to break down.
* AssassinOutclassin: Naturally, or the series would be over before hitting the third page of the first chapter.
* ATeamFiring: The opening of the story begins with the entire class trying to gun Koro-sensei down. Not only does this fail, but Koro-sensei continues as if nothing were happening, taking attendance as the class continues shooting. The only notice he takes is when he asks a student to speak up, since he can't hear well over the gunfire.
* AxesAtSchool: They're rubber knives and pellet guns that are only harmful to Koro-sensei, but they're still rather alarming.
* BeachEpisode: In chapter 43, Koro-sensei builds a pool for the students so they can find relief from the summer heat. Ties in to the main plot when it leads to them discovering that [[spoiler:Koro-sensei can't swim]].
* BeautyEqualsGoodness: If you're attractive (or at least ordinary) without looking downright creepy, then you're likely a member of Class-E in one way or another. The only exception to this seems to be Koro-sensei and the four Class-E delinquents (not counting Karma). It's even lampshaded when two girls in a higher-ranking class note that Class-E's phys ed teacher, the young government agent Karasuma, is rather attractive, and that all of the guys and teachers in their class are ugly and mean.
** Koro-sensei's face will change from "good" to "evil" (Pitch Black, Extreme Anger) if anyone tries to push his BerserkButton. Usually occurs when someone tries to hurt his students or when he sees Itona Horibe's tentacles.
** Averted with Kaho Tsuchiya of Class C. Beautiful? Yes. [[{{Jerkass}} Cold-hearted, manipulative, vile witch]]? An undisputed affirmative. Played straight when she shows her true face.
** PlayedWith in Takaoka: his cartoony (well, more cartoony) smiley face masks a vicious streak a mile wide.
* BerserkButton: A cultural one, for Brazil. [[spoiler:[[UsefulNotes/TheWorldCup 7 to 1]]]]. Triggered when Koro-sensei is vacationing there, thinking up math problems.
* BlackComedyRape: Implied in Chapter 9, when Koro-sensei decides to retaliate against Irina's failed assassination attempt with some "maintenance". It turned out to be nothing but a high-speed massage, a swift change into a more conservative outfit, and [[NoodleIncident something else]]...
* BreakingTheFourthWall: In Chapter 22.
-->"''Takebayashi, do you seriously want that to be your first line in this manga?!''"
* BreatherEpisode: After the [[StoryArc Hotel arc]], the longest and most intense arc of the series up to that point, Koro-sensei decides to lighten up the mood by treating the kids to a [[{{Kimodameshi}} test of courage]].
* CallBack: There are numerous little details that become relevant dozens of chapters later.
** All the way back in chapter 2, Nagisa's English journal entry mentions sushi is his and his father's favorite food, and in chapter 76 the two of them have breakfast together at a sushi bar.
** In Chapter 51, Kayano reads a magazine on "Puddings of the World" instead of studying for finals. Her [[ADayInTheLimelight assassination attempt]] in Chapter 80 involves making a gigantic, explosive pudding.
** The "[[SpeciesLostAndFound weasel]]" which appears in the end of chapter 56 returns in chapter 88 to destroy the mini-tank of the boys.
* CastOfSnowFlakes: No two major characters look alike.
* CerebusRollercoaster: There are a few {{Story Arc}}s peppered throughout the manga that are significantly darker in tone than the rest, which become very jarring in contrast to the series' usual comedic, slice-of-life fare. The most outstanding examples include [[spoiler:the Assassination Island arc and the God of Death arc, which puts several characters' lives at risk]].
* ChainmailBikini: Irina had initially suggested a sexier, more revealing look when coming up with the design for the female students' new P.E. uniforms. [[DiscussedTrope The students complain that]] the skimpy design would've reduced most of its defensive capabilities to zero.
* CombatTentacles: Koro-sensei has them, of course. The cells that comprise of the tentacles can be transplanted onto a human, but they require an insane amount of energy to maintain and limit the recipient's human capabilities.
* CoolGuns: Every gun shown in the series is real, and rendered with exquisite attention to detail. The guns the students use are said to be airgun versions of the genuine articles, but looking at them, you can't tell the difference.
** The student's standard armaments are the M1911 pistol and the M4 MOE carbine. Rarely, they are also seen using SPAS 12 shotguns and [=MP5K=] submachine guns.
** Red Eye's rifle is an Accuracy International Arctic Warfare Suppressed. The AWS is a variant of the Arctic Warfare series visually distinguished by its lack of a muzzle break, and meant to fire subsonic ammunition. This fits Karasuma's description of the anti-sensei rifle bullets. They cannot be fired at supersonic velocities.
** Gastro's weapon of choice is the S&W Model 60 revolver. [[spoiler:The guns Chiba and Hayami have when fighting him are of the same type]]. Notably, the M60 has a 5-round cylinder, and Gastro is shown [[ShownTheirWork firing the correct number of shots before having to reload]].
* CrazyPrepared: Koro-sensei's "[[GreatBigBookOfEverything guidebook]]s".
* CripplingOverspecialization: One of the major challenges that every student (and assassin) must overcome is the penalty for failing to kill Koro-sensei: he will remember each plan, learn from it, and never fall for the same trick again. Fortunately, Koro-sensei has a hard time overcoming his weaknesses, which the students utilize to their advantage repeatedly.
* {{Crossover}}: In a one-shot chapter, Koro-sensei and Kusuo Saiki (from ''Manga/SaikiKusuoNoSainan'') visit Iruma and compete over the last piece of "Irumanjuu", a local delicacy. [[spoiler:Saiki eventually splits it in half and shares it with Koro-sensei]].
* CurbStompBattle: Akira Takaoka, elite soldier and special forces instructor, versus [[spoiler:Nagisa Shiota]], 14-year-old middle school student with three months of assassin training. [[spoiler:Nagisa wins in under 10 seconds]].
* DavidVersusGoliath: [[spoiler:Nagisa vs. Takaoka]].
* DeusExitMachina: During the Assassination Island arc, [[spoiler:the students force Koro-sensei into his ultimate defense mode, in which he is also immobile for 24 hours. When Takaoka and his hitmen assault the class, the remaining 15 students and the other two teachers have to handle the situation for themselves]].
** DeusExMachina: Averted. When he returns, everything was already over.
* DetonationMoon: Koro-sensei's first major demonstration of power: he basically reduced it to a permanent crescent by destroying 70 percent of its volume.
* DidYouJustFlipOffCthulhu: Not flipping him off, but scolding him, which is in line with the spirit of the trope. Kataoka, Yada and Okano give Koro-sensei a pretty good telling off when he pulls up Class E's flower bed as part of an attempt to look cool. They make him replant the whole thing at regular speed as punishment. Afterwards, the class holds an assassination rally with a handicap: Koro-sensei gets tied up and dangled from a tree branch like a pinata while the class tries to hit him with anti-sensei knives taped to long poles.
* {{Doorstopper}}: What Koro-sensei produces every time he comes up with a "[[GreatBigBookOfEverything guidebook]]" for class excursions. One octopode's guide is another man's industrialized carbon-capture method--with indices, cross-references, info-panels, bullet points and plot-significance.
* DuelToTheDeath: The one-on-one knife duel between [[spoiler:Takaoka and Nagisa at the climax of the Hotel Arc. Nagisa comes out on top, but despite previously wanting him dead, he opts to do the right thing and knock him unconscious instead--[[CruelMercy wearing the same placid smile that drove Takaoka off the deep end last time]]]].
* DutchAngle: The panel where Nagisa's [[spoiler:visible killing intent goes from 0 to 100 in an instant]] is drawn like this.
* DynamicEntry: In chapter 86, Karma comes out of nowhere and pulls off a two footed kick against Shiro's goons, while Maehara takes out another in the background of the same panel with a one footed version.
* EasterEgg: On the newspaper page with the baseball player being attacked by Koro-sensei's tentacles, there's a side article captioned by the quote "My wife is slut".
* ElevatorSchool: Kunugigaoka is one, but if you're in class E at the end of second term, you don't get to advance.
* EnemyEatsYourLunch: Koro-sensei tends to overreact when the food he brings back from overseas winds up lost or stolen. In his introductory chapter, Karma baits Koro-sensei into a trap by stealing the gelato he bought in Italy and eating it it front of him during a quiz.
* FailureIsTheOnlyOption: The story will end as soon as someone successfully assassinates Koro-sensei. Of course none of those assassination attempts shown in the first hundred chapters or so are going to work.
* FastballSpecial: How [[spoiler:Isogai launches Itona to the top of Class A's bo-taoshi pole]]. Using both hands and having exceptional high jump skills definitely helped.
* FestivalEpisode: The day before the start of the second semester, Koro-sensei and some of the members of Class-E visit a festival to commemorate the end of summer. The kids, thanks to their assassination training, turn out to be far too skilled at the game booths. [[ColdSniper Hayami and Chiba]] in particular end up banned from the shooting range after practically robbing the stand of its prizes.
* FlashBackEcho: Koro-sensei notices a fragment of charred, sizzling gunpowder from Nagisa's failed assassination attempt, triggering a brief flashback involving what looks like the remains of a destroyed, burning laboratory, a woman with a bleeding stomach, and a tentacled, human-like figure cradling her in its arms. This cryptic flashback keeps popping up in a similar manner, but the context has never been fully explained yet.
* FictionalSport: The students play "assassination badminton" in PE class, which is actually more like volleyball in almost every way. The main differences are that they can only touch the ball with the blade of a knife, and they use a tennis net instead of a badminton or volleyball net.
* {{Foreshadowing}}: Nagisa was built up to have a ''lot'' of hidden talent.
** [[spoiler:Confirmed in Chapter 41, which reveals that Nagisa has an ''exceptional'' talent for assassination]]. To be specific, his ability to [[spoiler:hide such bloodlust that it scares trained soldiers]].
** In chapter 28, Koro-sensei takes several students to see an American {{superhero}} movie, wherein the major PlotTwist involves the BigBad being revealed to be the heroine's brother. At the end of the chapter we meet Itona, Koro-sensei's AxCrazy "younger brother".
** In chapter 67, Karasuma vaguely recognizes two of the mastermind's minions because he had seen them before [[spoiler:in Takaoka's photographs of the soldiers he had previously trained, foreshadowing the mastermind's identity.]]
** The "God of Death" is holding a rose and a bouquet of flowers when he's first described by Lovro. [[spoiler:He first appears to the students of Class E as an unassuming flower salesman, offers Kanzaki a rose, and sells them a bouquet of flowers for Irina's birthday]] before the story reveals his identity.
* [[GratuitousEnglish Gratuitous IPA English]]: On the cover page of chapter 55, the word assassination is rendered as əsˈæsənˌeɪʃən, which would actually be assassanation, with the first "ass" as its own syllable. The correct rendering would be əˈsæs.ɪnˌeɪ.ʃən. Let this stand forever as the most pedantic entry on the page.
* TheGuardsMustBeCrazy: Those two guards on the top floor of the hotel in the Island arc are trained agents, yet both of them immediately left their spot to chase after a kid just because he insulted them. Not to mention they got outrun by a kid (a kid trained in assassinating and the fastest runner, but still...).
* IdiosyncraticEpisodeNaming: So far all of the chapters have the word "time" in them.
** Possibly intended as a reminder that there is a deadline for how long the students have left to kill Koro-sensei.
** May also be interpreted as a class "period" (a loose synonym for "time"). Some chapters even have the exact same title as a previous chapter with the phrase "2nd Hour" added to the end of it. It meshes nicely with the series' classroom theme.
* InvisibleParents: Though they may be briefly mentioned on occasion, not a single parent of any student appeared until dozens of chapters later.
** Chiba and Hayami's parents are shown in a flashback, respectively.
** Nagisa's father, who is often absent due to his work, appears in chapter 76. He seems to be nice, and it's mentioned that Nagisa's mother is strict.
** Takebayashi's parents (chapters 78 and 79) aren't happy with his poor grades and are shown to be quite distant from him at home [[spoiler:and because of that, he [[TenMinuteRetirement leaves Class E for a couple of chapters]]]].
** Kimura's parents and Kirara's mom are shown in a flashback in chpater 89.
* JapaneseRanguage: Invoked by Irina, who as the language teacher spends an entire lesson trying to get the students to avert this.
** During her introductory arc, Class-E makes a half-baked attempt at shortening "Jelavic-Oneesama" to "Vic-Neesan". Their inability to pronounce the "v" properly, compounded by Irina's unpleasant personality, earns her the nickname "Bitch-Neesan" (later "Bitch-Sensei", when she wins their favor) for the rest of the series.
* JerkAss: Almost '''EVERYONE''' who isn't in Class E, and a few students who are until CharacterDevelopment. The school's chairman gets special mention, because he specially designed the school to encourage its students ''and teachers'' to be this way to everyone associated with Class E. Seriously, if this weren't a manga, a good half of this school's faculty would have been canned ''long'' ago in any country with a reasonable education system.
* LaserGuidedKarma: Whenever the higher-ranked students are shown to look down upon or make fun off Class E students, Koro-sensei helps them to get their revenge or something eventually happens to make them regret it, unless the [[KarmaHoudini Chairman]] appears to intervene.
* LeaningOnTheFourthWall: Throughout the first day of the island vacation, the students wear casual street clothes instead of their typical school uniforms. In Chapter 73, the following day, they're already back in their P.E. jerseys.
-->'''Kimura:''' Well, there aren't any other guests, and these are comfortable.
-->'''Fuwa:''' And it would be cruel to have to think up clothes for a second day.[[note]]For the [[Creator/YuuseiMatsui mangaka]], at least.[[/note]]
* LoopholeAbuse: Koro-sensei promises a free shot at one of his tentacles to anyone who can earn the top score on one of the subjects tested on the first final exam. [[spoiler:Although three students earn a high score on a subject exam, Koro-sensei only starts to panic when four more students earn perfect scores on the ''Home Economics exam'', which he completely forgot about because it's generally not considered one of the five main subjects]].
* {{Masquerade}}: Aside from the Chairman, the rest of the school (and the world) has no idea that Class 3-E is harboring the culprit who blew up the moon and the ongoing attempt at his assassination. It's been stated that the government is willing to [[LaserGuidedAmnesia wipe the memories]] of anyone unable to uphold this secret.
* MonsterOfTheWeek: {{Inverted|Trope}}. Koro-sensei is the VillainProtagonist of the assassination side of the plot, and in each story he foils an assassination attempt made by a different student, teacher, or character from outside the classroom.
* MoodWhiplash: The series' silly, comedic tone can swerve into a much darker one when you least expect it to.
** Chapter 60 changes things up a bit when a fun and interesting day at the beach ends with a couple of students suddenly [[spoiler:collapsing onto the floor and coughing up blood]].
** Chapter 75, which features the class' attempt at shipping Irina with Karasuma, fluctuates between hilarious, tragic, and back again.
** Chapter 83 is a comedy chapter about Koro-Sensei being framed as an underwear thief. [[spoiler:Then Shiro and Itona spring their trap on the last few pages...]]
** Chapter 98 has the main cast showing to Koro-Sensei their newly-acquired equipment, skills and resolve (while ruining his relaxation time, but he doesn't mind). [[spoiler:Meanwhile, the God of Death kills Red Eyes. Irina is next]].
* MundaneMadeAwesome: The extensive use of visual metaphors do a fine job of making ordinary actions come to life.
** Exam questions are depicted as bizarre, gigantic monsters which the students need to conquer or slay. The kids are armed not with writing utensils, but with knives, hammers, swords, and staves. Taking a test has never been so epic.
** One chapter manages to visually equate the act of [[spoiler:clapping in front of someone's face to ruin their concentration]] to ''a nuclear explosion in a city.''
* MythArc: Though the plot's objective (kill Koro-sensei and save the world) is spelled out from the get-go, the story is divided into several short, episodic arcs that can stand alone like the ones found in a typical slice-of-life manga. However, there's enough [[TheLawOfConservationOfDetail foreshadowing, continuity, and other little details]] to tie them all together and consistently hint at a greater, overlying mystery.
* NeverRecycleYourSchemes: Justified. Once Koro-sensei knows how to defeat a tactic, he's smart enough and aware enough that it will never have a chance of working on him again.
* NonStandardCharacterDesign: Koro-sensei and the Chairman both look quite distinct from any other character. Most characters are your basic anime designs, drawn with rounded lines and uneven hair. It goes without saying that Koro-sensei, being a tentacle monster, has a unique entirely rounded appearance. The Chairman is more subtly strange, but his design also feels off compared to (other) humans. He is incredibly angular and sharp-looking, and his clothes have noticeably fewer creases and wrinkles. The contrast between the two is probably intentional, to match their opposing roles in the story.
* NoSell: Irina lures Koro-sensei into a shed where he's bombarded by hundreds of rounds of machine gun fire courtesy her henchmen. Instead of dodging, he allows them to fire away to prove that lead bullets, unlike the [[AppliedPhlebotinum anti-sensei ammo]] that they chose not to use, will simply dissolve on contact with his body.
* OhCrap: Standard reaction for anyone who is subject to [[spoiler:Nagisa's superbly hidden bloodlust and talents for efficient, ruthless assassination]]. Notable in that two highly skilled government field agents are the ones most prominently displaying ''massive'' "Oh Crap" faces after they realize what's happened.
* OneHitKill: Lovro's "secret killing technique" is designed to turn the tide of a battle between a skilled combatant and an assassin to the latter's favor. It's extremely effective, but only works under very specific conditions. [[spoiler:Lovro teaches the skill to Nagisa, who eventually uses it to defeat Takaoka during their rematch at the climax of the Hotel arc]].
** RefugeInAudacity: The first step is to do something completely insane to get the enemy's attention ([[spoiler:like dropping your weapon]]). The second is to [[spoiler:completely ruin the enemy's concentration by ''clapping]]''. The reasoning is that doing this [[spoiler:buys you enough time to change a battle of attrition (soldier) into a surprise attack (assassin)]].
* OurMonstersAreWeird: The "monster" representing the [[http://www.mangareader.net/assassination-classroom/53/14 Social Studies exam]] is a metallic, six-limbed humanoid with a gun turret for a head.
* OverlyLongName: The anime that Takebayashi recommends to Koro-sensei is titled, "Ore No Imouto Ga Totsuzen Hiroshima-Fan Ni Natta No Wa Kareshi No Eikyou Ni Chigai Nai Ken Ni Tsuite".[[note]]Regarding The Incident Of How There's No Doubt That My Little Sister Became A Hiroshima Fan Due To Her Boyfriend's Influence[[/note]]
* LeParkour: After all their physical training in the first term, in second term class E starts training in freerunning. They use it in an extreme version of Cops and Robbers against [[BadassNormal Karasuma]] and [[SuperSpeed Koro-sensei]].
* PrettyLittleHeadshots: Averted, as much as is possible for a manga aimed at this age group. When the God of Death recalls making a kill by [[ImprobableAimingSkills firing between two Shinkansen lines going in opposite directions]], we see his victim from the exit wound side of his head, with a very large spray of blood.
* PsychoSerum: Side effects of having tentacles transplanted into your head include pain, violent meltdowns, reduced intelligence, and single-minded tenacity. [[spoiler:When Itona finally had his tentacles removed, the lack of these side effects made him act like a completely different person]].
* {{Pun}}: Tons, most of which incorporate "殺", the kanji for "kill". Of particular note, Koro-sensei's name was chosen for him by the class for sounding similar to "korosenai," the potential-negative form of the verb meaning "to kill," so it means "cannot kill" or "cannot be killed."
* RaceAgainstTheClock: At the end of next March, Koro-sensei plans to blow up the Earth. The students, along with the handful of people aware of the threat, only have a year to kill him.
* RecycledInSpace: It's ''GreatTeacherOnizuka''. With an alien.
* RunningGag:
** Discovering or displaying Koro-sensei's weaknesses.
** Koro-sensei's [[PaperThinDisguise poor disguises]].
** Koro-sensei being tricked by his students into comedic situations.
** Poking fun at [[DudeLooksLikeALady Nagisa's]] androgynous appearance.
** [[ACupAngst Kayano's]] hatred for big boobs as well as her lack of bust.
** Bitch-sensei's failed attempts at {{Fanservice}}.
** Whenever Koro-sensei and the class have a "sinister" plan at the end of a chapter, everyone makes the same {{Nightmare Face}}, with a single student as an exception.
* SaveOurStudents: Koro-sensei is at Kunugigaoka Middle School to help their lowest-performing students excel... through a liberal application of super powers and some rather unusual extracurricular activities. Avoids {{Glurge}} by making his successes not a matter of whether he cares or not, but due to the fact that he is just an inhumanly good teacher.
* ScareEmStraight: Parodied. Koro-sensei draws a short comic that is presented as if it were this to Kataoka to warn her that she may grow up to be dangerously codependent if she does not learn to stand up for her own needs more. It's much funnier in the manga than how it is described here.
* SelfMutilationDemonstration: When the students doubt the effectiveness of their guns' anti-sensei bullets, Koro-sensei takes a gun and shoots one of his own tentacles off to prove that he had in fact dodged the entire class' barrage of fire. The tentacle fully regenerates itself a few seconds later.
* ShaggyDogStory: A mysterious person [[spoiler:infects Class-E with a virus that will eventually lead to a slow and agonizing death]]. Instead of handing over the helpless, immobile Koro-sensei in exchange for [[spoiler:the antidote]], the teachers and students [[spoiler:who have not yet succumbed to the virus]] spend an entire arc infiltrating a dangerous hotel full of bodyguards, assassins, and [[ArsonMurderAndJaywalking spoiled brats]] in order to steal it from the mastermind. The mastermind, [[spoiler:who turns out to be a vengeful Takaoka]], renders all of their efforts pointless by [[spoiler:blowing up the antidote in front of the class]].
** [[spoiler:Fortunately subverted. Unknown to Takaoka, the assassin he charged with infecting the class with the virus served them a seemingly painful yet harmless bacteria instead. Knowing that Takaoka never intended to hand over the antidote, he and the other two assassins decided that their reputations weren't worth perpetrating the mass murder of a bunch of middle school students]].
* ShoutOut: Has [[ShoutOut/AnsatsuKyoushitsu its own page]].
* SlidingScaleOfSillinessVersusSeriousness: The story goes from one side to the other whenever it feels like it. At times it occupies both sides of the scale simultaneously. And it works.
* SpeciesLostAndFound: The Japanese river otter, declared extinct in 2012, appears in chapters 56 and 88.
* SplitScreenReaction: [[spoiler:Nagisa]] earns a seven-panel one after [[spoiler:pseudo-assassinating Takaoka]].
* StatusQuoIsGod: Enforced by the Chairman, who developed the Class E system to give the rest of the school a motive to excel academically. When Koro-sensei tries to defy his system by challenging and motivating Class 3-E to score within the Top 50 on their first mid-term exams, the Chairman prevents them from excelling by adding several last minute questions to the exam and alerting the entire student body of the change ''except'' for Class E.
* SyntheticPlague: [[spoiler:Eleven students of Class E get infected by one at the end of chapter 60]]. Early symptoms differ between people, so some of them are still on their feet while others are vomiting blood, and [[spoiler:Terasaka is able to hide his symptoms for ''hours'']]. All of a sudden, things just got extremely real.
* ThisIsReality: During the Cops and Robbers parkour challenge, Sugaya claims that "This isn't some battle manga" as he dismisses his classmates' warnings of Karasuma's overwhelming stealth and agility. A few seconds later, Karasuma appears behind him and catches him in mid-sentence.
* TownWithADarkSecret: Fukumajima Island, a tropical paradise home to several gorgeous beach resorts. [[spoiler:The lone hotel on its mountaintop is a [[WretchedHive luxurious getaway]] for influential mafias, businessmen, politicians, and assassins who are after Koro-sensei and the students of Class 3-E]].
* TwoLinesNoWaiting: The main plot line of training and attempting to assassinate Koro-sensei is interwoven with the students dealing with various problems in their school lives.
* TheUnreveal: After fighting Itona, Koro-sensei decides he has no choice but to reveal a shocking truth about himself. He is actually an artificially created creature.
-->'''Entire class:''' "Well, duh. And?"
* UnspokenPlanGuarantee: The relative success of any assassination attempt on Koro-sensei's life is inversely proportional to how many pages are spent explaining the plan. The most successful attempts, such as Nagisa's suicide attack, most of [[spoiler:Shiro's schemes]], and the [[spoiler:assassination on the vacation island]] are never fully explained to the reader in advance.
** Takaoka's master plan: Humiliate and beat a student into submission during a "fair fight" using cruel physical and psychological tactics. The details of this scheme take about two chapters to fully explain. Meanwhile, [[spoiler:Nagisa, the intended victim, is forced to wing it]]. Guess who wins the fight?
** Nagisa explains his tactics in exhaustive detail during his [[spoiler:second fight with Takaoka. But the trope is subverted, as his plan proceeds to go off without a hitch]].
* WakeUpGoToSchoolSaveTheWorld: Inverted. The story is set up like this, but while the students' social and academic lives are challenging, they're trivial compared to the task of killing Koro-sensei.
* WeNeedADistraction: Phase 1 of Class E's revenge plot against the students who bullied Maehara: Nagisa and Kayano, disguised as an elderly couple, distract the bullies at a cafe so that Hayami and Chiba can shoot homemade laxatives into their drinks.
** When it seems like Koro-sensei is about to discover Kataoka's plan to assassinate him in the water, Nagisa steps in to take advantage of his weaknesses ("he's very worried about appearances") by taunting him about some fan-letters to a big-breasted actress he found on Koro-sensei's desk.
** The Assassination Island arc employed this trope several times. Makes sense, since they need to advance quietly to their goal on the top floor of a hotel. Bitch-sensei [[DistractedByTheSexy uses her skills]] to distract a group of guards to buy times for her student; Kimura insults two guards to make them [[TheGuardsMustBeCrazy chase him]].
* WiseBeyondTheirYears: The two young boys at the nursery act unusually mature for their age.
-->'''First Boy:''' The action looks so real.
-->'''Second Boy:''' Yeah...it's much more stimulating than the [[TakeThat Disney monopolized Hollywood]].
* TheWorfEffect: Lovro the hitman dealer was a powerful, talented assassin during his younger days. Despite being currently retired, he's still skilled enough to effortlessly subdue Irina. [[spoiler:He's no match for the God of Death, a mysterious figure who abruptly [[NotQuiteDead kills Lovro]] within ten seconds of making his presence known to him]].
* YourSizeMayVary: Used artistically, particularly with [[spoiler:Nagisa and Takaoka]] to emphasize the DavidVsGoliath aspect of their fight. Sometimes they would be drawn close to their actual relative proportions, sometimes Takaoka would look twice as tall as [[spoiler:Nagisa]].
** The foreign exchange students participating in the Bo-Taoshi challenge do NOT look the same age as middle-schoolers. They seem to grow in size as the match progresses.
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