History Manga / FukushuuKyoushutsu

* BullyBrutality: Ayana's bullying is truly ''horrendous'', up to and including ''multiple counts of rape''. It's little wonder that she decides to go on her Roaring Rampage of Revenge.

* CorruptTheCutie: Ai starts to go completely on board with Ayana ideas no matter how bloody, due to slowly accept her ideals.

* BloodierAndGorier: Some revenges are bloody torture and accidents, some are not. Particularly, Kawamoto(being throw in a pit with a board pinned with nails) compared to Igarashi(threatened by muggers).

* DownerEnding: [[spoiler:Much of the class is dead, and everyone who survived experienced a lot of mental or physical trauma (if not both). Ayana ends the series in a coma from falling from the 4th story of the school. And Yamase, who was ultimately the instigator of the ''entire plot'', gets away scott free, as apparently Ren is unable to bring himself to kill him, even knowing everything he's done. And news of the events has lead to a chain of copycat cases of students violently attacking each other in revenge for bullying across Japan.]]

* KissingCousins: [[spoiler:The only woman that Ayana's father ever truly loved was his IllGirl of a cousin who turned out to be Ren's mother. The family, however, made Ayana's father marry her mother into a Loveless ArragnedMarriage. He's hated both women ever since. Ren and Ayana are if fact half-sibilings.]]

* KissingCousins: [[spoiler:The only woman that Ayana's father ever truly loved was his IllGirl of a cousin who turned out to be Ren's mother. The family, however, made Ayana's father marry her mother into a Loveless ArragnedMarriage. He's hated both women ever since. Whether or not Ren and Ayana are half-sibilings is never revealed.]]

** Ren chooses not to kill Ayase when he has the chance out of some sort of kindness. [[spoiler:It turns out that Miho had actually ''asked'' Ren to kill Ayase, as she knew that he was the instigator of literally the entire plot, and by leaving him alive, Ayase goes on to free Shouta who had gone insane from his imprisonment. Through Ayase's manipulation, Shouta takes a chainsaw and kills one student, severely maims another, and causes Ayana to jump out of a window multiple stories up, putting her in a coma that she does not come out of before the end of the story. If Ren had killed Ayase like he had others without issue, the story may not have had a happy ending, but at least a ''happier'' ending.]]

** [[spoiler: It's implied in one chapter that Ayana intends to do this after she has gotten revenge on all her classmates.]]

* CentralTheme: TheCycleOfRevenge is endless, continuous and fruitless. Nothing comes out of revenge aside from violence, from revenge, you will not find happiness, satisfaction or justice, just possibly some catharsis before someone else tries to get revenge on you.

* TheCycleOfRevenge: [[spoiler:Ayana was a target of violent bullying from Mari, as she was trying to get revenge from the suicide of her father, whose death she blames on Ayana's father. The violent bullying ultimately leads Ayana to unleash revenge on everyone. After the "Revenge Classroom" Case is made public, several stories of violence between minors due to bullying and revenge sprout nationwide as a surge of crime between minors happen.]]

* BewareTheNiceOnes: Yamase can get pretty dangerous when mad.

* BigBadEnsemble: Ren, Ayana and Miho can be considered [[BigBad Big Bads]] to the class as a whole.

The manga follows Fujisawa Ayana, a girl who gets bullied and abused on a daily base by her classmates. After surviving a murder attempt by an unknown classmate, she realizes that it's kill or be killed, so she starts a plot to take revenge on every one in her class.

* FinalBoss: Ren is compared to one, being the most powerful member of the class. [[spoiler:In the end though, Ai manages to catch him off guard and murder him before the finale: it is Mari and her gang who are the last obstacles to be overcome.]]

* FinalBoss: Ren is compared to one, being the most powerful member of the class. [[spoiler:Ultimately, however, he is never fought, nor does he wind up a victim of Ayana's revenge.]]

* AbortedArc: In-universe, Ayana throws some of her revenge plans away after situations change.
* AbusiveParents: Both Ayana and Yuuko have those, but Yuuko are far worse. While Ayana's parents basically consider her a failure and a shame, Yuuko's parents [[spoiler: lock her up in her room and force her to be there, studying until they forgive her.]]
* AccompliceByInaction: Ayana will take revenge on everyone in her class, even those who did nothing against her, because they did not helped her either.

* AllTheOtherReindeer: Ayana is heavily bullied in school, she gets help of Shouta and Ai by convincing them that, when she is gone, they'll seek other targets, and they are the most likely ones.
** Apparently, the entire class, once disbanded has been singled out from the students of the school they went to, out of fear they are cursed.

* BewareTheQuietOnes: Tsukamoto seems to be up to something weird, to the point where even Ren does not mess with her.

* DrivenToSuicide: [[spoiler:Yuuko, after spending too much time in her parents' punishment.]]

* RevengebeforeReason: Downplayed in Ayana's case: she realizes her revenge will forever haunt and keep her away from a normal life, but doesn't believe that there's anything else for her and that she has [[IveComeTooFar gone too far]].

* SanitySlippage: Ayana after [[spoiler: Yuuko's suicide.]]
** Ai does this later on.

* WildCard: Miho is strange, she is seemingly doing her own thing, which surprisingly ends up helping Ayana, but that was completelly out of her purpose... or not.

* YouHaveOutlivedYourUsefulness: [[spoiler:Shouta's]] ultimate fate. After [[spoiler:killing Ochi]], Ayana realizes that it's too much of a liability to keep them around, so [[spoiler: she locks him in the basement of the abandoned apartment complex, telling him she will take him out of there after everything ended]], that is, it they survive.

* FinalBoss: Ren is compared to one, being the most powerful member of the class.

* {{Badass}}: Ren, who can punch holes in hardwood walls without a scratch to his knuckles and makes literally everyone except Miho scared for their lives in his presence. Ai even compares him to a videogame FinalBoss in that he's simply ''wayyyyyyyy'' too dangerous to deal with for now.

* {{Bookworm}}: Miho, who quotes Osamu Dazai and [[{{Badass}} can put even Ren in his place]].

* {{Bookworm}}: Miho, who quotes Ozamu Dazai and [[{{Badass}} can put even Ren in his place]].

* {{Bookworm}}: Miho, who quotes NoLongerHuman and [[{{Badass}} can put even Ren in his place]].

* {{Bookworm}}: Miho, who quotes OzamuDazai and [[{{Badass}} can put even Ren in his place]].

* BigBadEnsemble: Ren, Ayana can be considered [[BigBad Big Bads]] to the class 3, ambiguously, Tsukamoto and Mao as well.

* {{Yandere}}: Ren seems to e this for Ayana, even punching someone to the point of disfiguration for telling others he dated her.

* CorruptTheCutie: Ai starts to go completely on board with Ayana ideas no matter how bloody, dure to slowly accept her ideals.

* LesYay: Ai's interest for Ayana looks like a crush later on.

* EnemyList: All volumes of the manga have a picture of each member of the class. Those that Ayana already took revenge appear with a mark on their photos.

* WhiteSheep: Some of the characters from class 1-A are genuinely nice people, such as Yamase, Ai, Kitaura and Emi. They are, nonetheless, on Ayana's list.

* {{Yandere}}: Ren seems to e this for Ayana, even punching someone to the point of disfiguration for telling others he dated her.

* AccuserOfBrethren: It's too late to apologize to Ayana, it does not matter your intentions or regrets.

** Ai does this later on.

* AccompliceByInaction: Ayana will take revenge on everyone in her class, even those who did nothing against ehr, because they did not helped her either.

** Ai does this later on.