[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/Rabbit_Doubtsmall_9323.jpg]]
[[caption-width-right:350: Certainly not BunniesForCuteness... ]]

''Doubt'' is a horror manga written by Tonogai Yoshiki with enough bloodshed and plot twists to make your head spin.

[[NiceGuy Yuu Aikawa]] is a typical [[OrdinaryHighSchoolStudent average teenager]] who plays a cellphone game called "Rabbit Doubt" with his friends. In this game, the players are [[TenLittleMurderVictims a warren of "rabbits" who must figure out which player is the "wolf" hidden amongst them before they are all picked off one-by-one]].

Unfortunately, Yuu's normal life is cut short when he is attacked and kidnapped by a strange man wearing a grotesque rabbit mask. He wakes up to find himself [[LockedInARoom trapped with the rest of his friends]] in an [[AbandonedHospital abandoned psychiatric hospital]], where they will be forced to play a real-life version of Rabbit Doubt.

Which member of the group is the "wolf" tasked with killing the rest? Who is "Hajime", the stranger who acts as the sixth player of the game? And can the group find a way to trust each other long enough to escape the hospital with their lives intact?

Definitely not to be confused with the Pulitzer-prize winning [[Theatre/{{Doubt}} play of the same name]] (or the movie based on it). Also not to be confused with the manga ''Doubt!!'' by Kaneyoshi Izumi or ''Doubt!'' by AMANO Sakuya.

See also ''Manga/{{Judge}}'', which is either a sequel or a SpiritualSuccessor, and ''Manga/{{Secret}}'', the third entry in the series.
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!!This manga provides examples of:

* AbandonedHospital: Most of the story takes place in an abandoned psychiatric hospital, which still contains some effects such as scalpels and other minor medical supplies.
* AnyoneCanDie: [[spoiler: Considering the only two confirmed survivors are Mitsuki and Rei, with Yuu possibly dead.]]
* ArcWords: "The Liar Must Die," which is found written in blood next to most of the corpses and is the slogan for the Rabbit Doubt game.
%%* AxCrazy: [[spoiler: Mitsuki.]]
%%* BadassBookworm: Hajime.
* BigBad: The Wolf is the one who uses [[spoiler:her hypnotic abilities]] to trap people in a [[TenLittleMurderVictims mafia-esque]] DeadlyGame called “Rabbit Doubt” and [[TheMole infiltrate the group]] as the murderer. [[spoiler:It turns out to be Rei Hazama, who was [[BrainwashedAndCrazy controlling]] Mitsuki Houyama and lashing out at society because she was accused of being a fraud psychic and her parents killed themselves, and attempted to kill her, out of shame.]]
* {{Brainwashed}}: [[spoiler:Using hypnotism, Rei does this to Mitsuki and all the other Wolves through the TV and through coded messages.]]
* BrainwashedAndCrazy: [[spoiler:All of the Wolves are being hypnotically manipulated by Rei and might not have any violent tendencies on their own.]]
* TheChessmaster: [[spoiler:Rei Hazama.]]
%%* ChildhoodFriendRomance: Yuu and Mitsuki.
%%* DoubleTake: Yuu in the first chapter.
* TheDogWasTheMastermind: In the story, the group of friends learns that one of them is the Wolf, the one who trapped them here. Come TheReveal, [[spoiler:the Wolf is Mitsuki, but the Wolf controlling ''her'' and all other Wolves is ''Rei Hazama'', the meek wheelchair-bound girl who seemingly [[SacrificialLamb was the first to die]]]].
* DownerEnding: [[spoiler:Hajime is likely hanged, Mitsuki likely kills Yuu and is prosecuted, and Rei kindly asks for the check in some random café somewhere.]]
* {{Expy}}: Compare Yuu to [[VisualNovel/HigurashiWhenTheyCry Mamoru Akasaka]] in the Higurashi arc Tonogai worked on.
* FanService: No matter what's going on, we get to see a good shot of Haruka's cleavage at least three times per chapter. [[spoiler:Or at least, until she gets killed off.]]
%%* FairCop: [[spoiler:Hajime.]]
* {{Foreshadowing}}: [[spoiler: On the first cover Mitsuki is wearing the same rabbit mask as the person who hit Yuu over the head to kidnap him, and on the first title page Rei is holding it on her lap. Also see below...]]
* GirlsLoveStuffedAnimals: Rei carries a large bunny plushie everywhere she goes.
* GirlWithPsychoWeapon: In the climax of the manga, [[spoiler:Mitsuki starts dragging around a fireman's axe as she pursues Yuu, and she used it several times before that point to kill people.]]
%%* {{Gorn}}
* GreaterScopeVillain: [[spoiler: Rei. The mastermind behind all 'Rabbit Doubt' games who has {{Brainwashed}} multiple wolves including Mitsuki, using hypnotism.]]
* HairRaisingHare: It's not called ''Rabbit'' Doubt for nothing. The murderer wears a creepy rabbit mask, and several backups are found stored in the hospital.
%%* HairTriggerTemper: Eiji.
%%* TheHero: Yuu.
%%* HorribleJudgeOfCharacter: Yuu.
* IdiotBall: Thanks to the stress of the situation, the characters end up fighting amongst themselves and refusing to hear each other out in favor of throwing accusations and loudly protesting their own innocence when they should be searching for a way out. They also repeatedly split up due to their suspicion of each other, despite realizing early on that doing so gives the killer an opening to pick them off.
* KarmaHoudini: [[spoiler:By the end of the manga, Rei has gotten away with her crimes and likely killed everyone who knew she was the real culprit.]]
%%* MaleGaze
* TheManBehindTheMan: [[spoiler:Rei to Mitsuki and all other Wolves, whom she had hypnotized into kidnapping and killing people on her behalf.]]
* MarshmallowHell: [[MsFanservice Haruka]] does it to Rei, [[spoiler:the ''BigBad'']].
* TheMedic: Hajime is a medical student and thus the only member of the group trained in first-aid. [[spoiler: It's actually just a cover story; he's really a police officer investigating the crimes.]]
* MissingMom: Mitsuki's mother died when she was a child, leaving her father as her only family. They're very close as a result [[spoiler:and his death drives her over the edge.]]
%%* MsFanservice: Haruka.
* NiceGuy: Yuu is a good-hearted boy who just wants to trust in his friends and keep them safe. [[spoiler:This ends up working against him when he has to figure out which one of them is the killer.]]
%%* NietzscheWannabe: [[spoiler:Mitsuki and Rei.]]
* NotWhatItLooksLike: Yuu and Haruka in the first chapter; Mitsuki was not pleased.
* OneWordTitle: The title of ''Doubt'', which is a contraction of the Rabbit Doubt game, and about the game itself, where the players are [[TenLittleMurderVictims a warren of "rabbits" who must figure out which player is the "wolf" hidden amongst them before they are all picked off one-by-one]], which is also what the characters end up doing, for real.
* ParentalAbandonment: [[spoiler:Mitsuki's mother died before she met Yuu. Also, Rei tells Yuu that the reason Mitsuki came to her to become the Wolf and despises liars, is that her father has actually been dead for a while.]]
* PeekABooCorpse [[spoiler: Haruka's head is found inside one of the rabbit masks and falls out in front of Yuu while he is searching for clues in the storage room.]]
* PoorCommunicationKills: Obviously. TheReveal contains a particularly nasty example - [[spoiler:Mitsuki basically murdered Kei and put Yuu through the game because the two of them [[NoGoodDeedGoesUnpunished bought her a birthday present as a surprise]]]].
* SmartPeopleWearGlasses: Hajime, a medical student, wears a pair of glasses to signify him as TheSmartGuy of the group.
* StepfordSmiler: [[spoiler:Rei and Mitsuki, of the Unstable variety. Underneath their smiles and kind demeanor are [[DisproportionateRetribution vengeful]] AxCrazy killers.]]
%%* TheTease: Haruka.
* TeensAreMonsters: [[spoiler:The backstories for a number of the characters involve things such as gangs and prostitution.]]
%%* TenLittleMurderVictims
%%* TroubledButCute: Eiji.
* UndercoverCopReveal: [[spoiler:Hajime is a cop investigating recent disappearances.]]
* {{Yandere}}: [[spoiler:Mitsuki is in love with Yuu and so terrified of being abandoned by him after losing her family that she is driven practically insane with jealousy when she thinks he's blown her off to hang out with another girl and cites it as her reason for killing both of them. It is ambiguous how much of her behavior is truly her own, and how much is due to Rei's hypnotism, however.]]
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