History Characters / BungoStrayDogsPortMafia

* PeekABangs: They cover his right eye.

-->'''Voiced by''': Creator/YuHayashi (Japanese), Creator/BenDiskin (Seasons 1-3), AJ Beckles (S4-onwards) (English), Dan Frausto (Latin American Spanish)

[[Characters/BungoStrayDogsArmedDetectiveAgency Armed Detective Agency]] | '''Port Mafia''' ([[Characters/BungoStrayDogsChuuyaNakahara Chuuya Nakahara]]) | [[Characters/BungoStrayDogsTheGuild The Guild]] | [[Characters/BungoStrayDogsRatsInTheHouseOfTheDead Rats In The House Of The Dead]] | [[Characters/BungoStrayDogsGovernment Government and Gaiden]] | [[Characters/BungoStrayDogsHuntingDogs Hunting Dogs]] | [[Characters/BungoStrayDogsDecayOfAngels Decay of Angels]] | [[Characters/BungoStrayDogsDeadApple Dead Apple]] | [[Characters/BungoStrayDogsOthers Others]] | [[Characters/BungoStrayDogsBeast Beast]]-]]] ]]

* SenpaiKohai: She holds her Akutagawa-sempai in high regard, not only as her superior but as the man she loves.

-->'''Voiced by''': Creator/YuHayashi (Japanese), Creator/BenDiskin (English), Dan Frausto (Latin American Spanish)

-->'''Voiced by''': Creator/AmiKoshimizu (Japanese), Creator/CindyRobinson (English), Carla Castañeda (Latin American Spanish)

* BerserkButton: He can be pissed off by almost anything. What triggers him most is the realization that Dazai has found a more capable subordinate than him. He even punched Dazai for stating that Atsushi is a better student.

* AsskickingEqualsAuthority: [[spoiler:He was locked up by the Port Mafia for a long time before he began training new recruits to be assassins, eventually working his way up to becoming an executive]]. [[spoiler:FridgeBrilliance when you realize the timing of this promotion was six years after ''Storm Bringer'', making it likely he took A's vacant spot]].

* SempaiKohai: She holds her Akutagawa-sempai in high regard, not only as her superior but as the man she loves.

* MindRape: Their specialty is a mind control curse that curses his targets by ravaging their consciousness with hallucinations, causing them to attack everyone in sight with no regard on whom they might be; allies or foes, friends or enemies.

* CuteAndPsycho: Looks like a very adorable child, but has the personality and mindset of a demon.

* CreepyChild: Oh so very much.

* FaceOfAnAngelMindOfADemon: Seems innocent enough at first...
* HumanizingTears: No matter how much of a CreepyChild Q is, it's hard not to feel sorry for them when they cry like any normal child during Steinbeck's torture of them.

* MindRape: Their specialty.

* LikeBrotherAndSister: She and Nakahara Chuuya became this. The latter was under the tutelage of the former and is notably the only one to address her as 'ane-san', a Japanese honorific specific to an older, mature sister figure (in contrast to 'onee-chan').

* AndThenJohnWasAZombie: [[spoiler:After cutting him down, Fukuchi has Bram Stoker revive Akutagawa as a vampire in his service. Akutagawa in turn proceeds to turn Higuchi, who then turns Gin and Hirotsu, as well as a good chunk of {{mook}}s. Tachihara is likewise turned by Bram after failing to kill Fukuchi during their confrontation.]]

* BalefulPolymorph: N [[spoiler:releases the entity, Guivre the Beast, from inside Verlaine, transforming him into massive creature that proceeds to mindlessly destroy everything in sight and only reacts to feelings of hatred]].

* ComedicLolicon: He openly admits he only likes girls under twelve. Luckily, the most we ever see him do is pamper Elise.

* AmbiguousGender:
** Technically. It's never revealed, and in Japanese, Q is consistently not gendered. Q's wiki page is written in GenderNeutralWriting.
** This is commented on at the end of ''Dazai, Chuuya, Fifteen Years Old'', when Dazai asks Mori what gender Q is and Mori admits he'd need to check Q's medical records to find out.

* CryCute: Hard not to feel sorry for them when they cry like any normal child during Steinbeck's torture of them.

* KnifeNut: She mainly attacks people with a knife.

* NiceHat: He wears Chuuya's hat for a good chunk of ''Storm Bringer''. [[spoiler:It was actually made specifically for Verlaine by Rimbaud to help him cope with his CloningBlues and control his powers]].

-->'''Voiced by''': Creator/KisshoTaniyama (Japanese), Nicolas Roye (English), Alan Prieto (Latin American Spanish)

* ShoutOut: She's named after the heroine in the short story "The Dancing Girl" by Ougai Mori.

-->'''Voiced by''': Creator/JunichiSuwabe, Creator/YuutoUemura (young Oda) (Japanese), Creator/DavidVincent (English), Alejandro Orozco (Latin American Spanish)

* RapunzelHair: Her hair goes well past her waist.

* RapunzelHair: Her hair reaches past her waist when down.

* IllBoy: Looks sickly and is frequently coughing. It is probably a reference to the real Akutagawa Ryunosuke, who spent large portions of his life being ill. [[note]]The poor author had chronic pleurisy, tachycardia, gastroptosis, enteritis, haemorrhoids, insomnia, and various mental illnesses.[[/note]]

* MultiColoredHair: Has black hair with white tips.

* MulticoloredHair: Has black and white hair.

[[Characters/BungoStrayDogsArmedDetectiveAgency Armed Detective Agency]] | '''Port Mafia''' | [[Characters/BungoStrayDogsTheGuild The Guild]] | [[Characters/BungoStrayDogsRatsInTheHouseOfTheDead Rats In The House Of The Dead]] | [[Characters/BungoStrayDogsGovernment Government and Gaiden]] | [[Characters/BungoStrayDogsHuntingDogs Hunting Dogs]] | [[Characters/BungoStrayDogsDecayOfAngels Decay of Angels]] | [[Characters/BungoStrayDogsDeadApple Dead Apple]] | [[Characters/BungoStrayDogsOthers Others]] | [[Characters/BungoStrayDogsBeast Beast]]-]]] ]]

* ActuallyIAmHim: Chuuya is introduced in the Fifteen arc as a kid who hates the Port Mafia and is looking for a supposed god called [[spoiler:Arahabaki. The drive to find it is so strong that even after the mafia relinquishes their leverage over him]], Chuuya continues to work with Dazai so he can obtain answers. [[spoiler:He later explains he knew Rimbaud was lying about the incident with the old boss since he was the only witness to mention seeing Arahabaki, but his account was too spot-on to be completely made up]], and Chuuya would know, since [[spoiler:he ''is'' Arahabaki]].
-->'''Chuuya:''' I am [[spoiler:Arahabaki]]
* AdaptationalAttractiveness: While he's not ''un''attractive in the manga, the anime tones down and removes his more intense facial expressions and gives him brighter and longer hair and switches out his grey eyes for larger blue ones. The same goes for the ''Dead Apple'' and ''Beast'' manga adaptations, which make him look a lot prettier than in the original manga.
* AdaptationalDyeJob: In the manga, Chuuya is given black or brownish-grey eyes, and dull, light red hair. In anime, he's depicted with blue eyes and more vibrant hair. His waistcoat also goes from light red to gray. His powers are depicted as glowing red in the anime, but are black in both the light novels and manga with him bring able to hide in the dark while using them. However, his Corruption markings are red in all versions.
* AdvertisedExtra: He's shown in promotional work about as much as the protagonists are and often gets highlighted in opening sequences. However, Chuuya actually has very little impact on the main storyline and makes very few appearances, only showing up in sixteen out of ninety-four manga chapters by August 2021.
* AllForNothing: Chuuya puts a lot of time and energy into becoming an executive before Dazai. He does phenomenally well as a jewel smuggler for the mafia, only for it to turn out all the channels he was using had been originally set up by Dazai, drastically reducing the impressiveness of his exploits.
* AmbiguousCloneEnding: [[spoiler:For a while, it appears Chuuya is a ModifiedClone created by the government that EscapedFromTheLab. However, Dazai points out that despite the evidence, there's nothing that can confirm or deny without a shadow of a doubt that Chuuya really is the clone. Dazai personally believes Chuuya is the original since he doesn't think it's possible to make a person he could hate so much, but he isn't an expert]].
* AmbiguouslyHuman: Chuuya struggled with this issue as a teenager, as he himself [[spoiler:had no idea what he was, and he often didn't feel like a real human. His link to Arahabaki caused him to mistakenly believe he and the entity were one and the same until Rimbaud clarified he was likely a human vessel for it. It's later further muddied in ''Storm Bringer'' where it's revealed Chuuya is possibly a ModifiedClone with an artificial personality. However, after the first usage of Corruption, it's now impossible to determine whether he's the clone or the original, but by the end,]] Chuuya decides it no longer matters.
* AngstWhatAngst: Despite the [[TraumaCongaLine severe amount of trauma]] Chuuya went through when he was younger, he came out a surprisingly stable adult who appears to have outgrown the identity issues he struggles with as a teenager.
* AnimalMotifs: Sheep and dogs. Chuuya is fiercely loyal to whatever organization he is a part of and good at following orders. In Fifteen he wears a wristband and belt buckle with a ram's head is likened to both animals by Dazai. Some promotional work also has him sporting a ram mask.
* ArtificialHuman: [[spoiler:Chuuya is likely a 'man-made anomalous life form', made when the cells of the original Chuuya were transplanted into the singularity Arahabaki. This means he would be technically not a human, but biologically indistinguishable.]].
* ArtificialIntelligence: Chuuya has no idea whether or not his [[spoiler:personality is something he naturally developed overtime or is merely an artificial formula implemented in him through programming]]. Dazai doesn't think it's possible to program a [[spoiler:personality he could hate so much]]
* BadassInANiceSuit: He's one of the most powerful Ability users in the series and he stands out with how well-dressed he always is even among the Port Mafia.
* BenevolentBoss: Implied. Unlike Dazai or A, Chuuya never demonstrates any abusive or cruel behavior towards his subordinates, and is genuinely saddened by the deaths of his men. While he doesn't have many scenes with those working under him, extra materials frequently show Chuuya looking out for them.
* BerserkButton: [[spoiler:Do ''not'' ask him where he was born unless you plan to be seriously injured]].
* TheBerserker: When using Corruption, Chuuya effectively turns into an ultra-powerful, mindless, killing machine that will annihilate everything in sight. Chuuya slowly dies while it's in use, and has no awareness so he will continue to destroy everything in sight either until he succumbs or the Ability is nullified.
* BioAugmentation: [[spoiler:Chuuya is probably a heavily modified clone made specifically to house Arahabaki]]. [[spoiler:As such, he's physically durable and quite strong with an Ability made to cause its own Singularity resulting in a massive amount of power. However, he is very weak to poisonous substances]]. [[spoiler:There is a slight possibility he is indeed the original Chuuya who had the same modifications done to him]].
* {{Bishonen}}: He's a very pretty man.
* {{Blackmail}}: After Rimbaud's death, Mori got ahold of all the documents pertaining to [[spoiler:Arahabaki]] and Chuuya's past, knowing they held the answers the boy was seeking. Mori then promised to give Chuuya the documents once he became an executive, but kept them under lock and key until then, ensuring Chuuya would be loyal to the Port Mafia in the early days.
* BloodFromEveryOrifice: While using Corruption for a prolonged period, Chuuya will start bleeding from numerous places. It's not merely cosmetic either, as the severe toll on his body could very well kill him.
* BookDumb: In Fifteen, this is used to highlight Chuuya and Dazai's differences, as the former fails to efficiently gather intel and complains about having never solved a riddle, while the latter is good at both. However, Chuuya is able to correctly deduce on his own that [[spoiler:Rando]] was the culprit behind the old boss sightings, albeit not as quickly as Dazai.
* BreakHerHeartToSaveHer: A platonic example. Dazai extorts Chuuya into joining the Port Mafia by threatening to have the Sheep killed, and despite having also manipulated them into turning on Chuuya for believing him to a traitor, the boy complies. Afterwards, despite Shirase being by no means a good friend, Chuuya keeps him in the dark, allowing Shirase to hate him for abandoning the Sheep and allowing them to collapse, knowing he's safer from the Port Mafia that way.
* BreakoutVillain: He's possibly the most popular antagonist in the series as a whole, mostly because his powerful GravityMaster ability and [[HoYay dynamic with Dazai]] are very appealing to the fans. He was included in an OVA based on a manga chapter he originally didn't appear in, was given several scenes in the ''Dead Apple'' movie and the first three episodes of the third anime season are dedicated to his backstory with Dazai. He also received an entire light novel centred on him discovering his past, which also happened to be the longest written, at almost five hundred pages.
* TheBrute: Downplayed. Chuuya is far from intimidating given his size and overall appearance, and while he's more reasonable than most examples, he's not exactly the brightest as he is prone to making tactical errors and putting himself into difficult positions- something Dazai likes taking advantage of. Nonetheless, he is still very capable of killing numerous people at once, and is usually deployed to deal with massive threats.
* TheBusCameBack: After being absent for three years in real time, he returns [[spoiler:to free Fyodor from prison, after having been turned into a vampire]].
* ByThePowerOfGrayskull: Activates Corruption by chanting 'Oh Grantors of Dark Disgrace. Do Not Wake Me Again.' (交際よ、汝陰鬱なる汚濁の許容よ、更めてわれを目覚ますことなかれ, Nanji, inutsunaru oujoku no kyoyou yo. Aratamete ware wo mezamasukoto nakare) [[spoiler:This is a trigger phrase which allows whoever wears Chuuya's hat to initiate Corruption]].
* TheCallKnowsWhereYouLive: This has somehow happened multiple times.
** [[spoiler:Downplayed the first time. After parting ways upon finishing their business with Rimbaud, Dazai resurfaces and holds the Sheep hostages while turning them against Chuuya, forcing him to join the mafia and leaving him with nowhere else to go]].
** Played straight in ''Storm Bringer''. Adam tries to get Chuuya to help him capture Verlaine, though he refuses, believing he can take on the assassin himself. [[spoiler:He soon after finds his friends were all massacred by Verlaine while he was gone, driving Chuuya to seek revenge]].
* CannotDream: [[spoiler:In ''Storm Bringer'', Chuuya reveals part of the reason he suspects he may not be human is because he is unable to dream]].
* CantHoldHisLiquor: He likes alcohol, but is a very poor drinker. [[spoiler:There is actually a reason for this since N made him physically strong but weak to substances like poison]].
--> '''Chuuya''': "(Drunk) Hey, listen to me, could you believe that boss just told me yesterday..."\\
'''Hirotsu and Kajii''': "Here we go again..."
* ChainedByFashion: Wears a chain on his hat, and with Corruption activated he's lethal. Becomes a little more symbolic when you know that [[spoiler: the ability “Arahabaki” continually rests within him in a 'chained' state]]. The chain is usually left out of his character design in adaptations.
* CloningBlues: [[spoiler:The current Chuuya is likely a clone who was experimented on to create a vessel for Arahabaki. Since his escape from the lab he's been plagued by notions that he’s not really a human. However, Chuuya ultimately decides to erase the logs that could confirm his humanity and leaves the possibility of having had a normal life behind]].
* CoatCape: Wears his black trenchcoat like a cape.
* ColdBloodedTorture: [[spoiler:Effectively what the experiments on him were]].
* ColorMotif: Chuuya tends to be associated with shades of red, with his hair, powers and some of his clothes showing off these colors. This symbolizes his aggressive personality, as well as displaying his RedOniBlueOni relation to Dazai, whose power is shown to be blue and is far calmer.
* CriminalFoundFamily: Mori gives Chuuya the whereabouts of the [[spoiler:original Chuuya's family]] as a gift upon becoming an executive. However, while Chuuya goes to see them from afar, he declines to meet them, deciding the mafia is his true family.
* CuttingTheKnot: When trapped in Poe's book world without his powers and five hundred murderers who need to be outed before he can escape, Chuuya quickly gives up on solving the mystery and resorts to randomly punching suspects. This actually works.
* DarkAndTroubledPast: He might even be able to give Atsushi a run for his money, given his TraumaCongaLine involving [[spoiler:the fact that he is likely a modified clone made by the government]].
* DangerousForbiddenTechnique: Corruption, the true form of his ability. It lets him manipulate the gravitons in his surroundings, allowing him to crush a tank with his bare hands and effortlessly throw around miniature black holes. On the downside, it puts him into a [[TheBerserker Berserker]] state that becomes harder for him to control the longer Corruption is active, and if Dazai can't shut it down in time, [[DeadlyUpgrade he'll eventually be consumed by Corruption and die]].
* DayInTheLimeLight: ''Storm Bringer'' focuses on Chuuya discovering his past. It also happens to be the longest ''Bungo Stray Dogs'' light novel.
* DeathOfPersonality: [[spoiler:N tries to use Chuuya's programming to erase his personality and create a new one. Luckily, N is thwarted, though it's unknown if this was ever inflicted on Chuuya in the past]].
* DemonicPossession: More or less what Corruption equates to. When the TriggerPhrase is stated [[spoiler:by the one wearing his hat, the 'gate' within Chuuya opens and his mind is overwritten by Arahabaki, the entity responsible for his Ability. Unfortunately, Arahabaki is not sentient indiscriminately destroys everything around it, with Chuuya's body quickly deteriorating until either he dies or Dazai nullifies the Ability and closes the gate]].
* DistressedDude: He has been kidnapped a shocking number of times for a person as powerful as he is. [[spoiler:If he's the original Chuuya, he was kidnapped by the military as a kid and was nearly taken by Rimbaud from the lab. As a teenager, he was abducted by the Port Mafia, and later in ''Storm Bringer'', he was briefly captured by Adam followed by Verlaine only minutes later, and finally caught by N]]. As an adult he gets trapped in Poe's book by Ranpo.
* TheDogBitesBack: Verlaine tries to invoke this by getting Chuuya to kill N, [[spoiler:the scientist responsible for experimenting on him as a child. Unfortunately for him, it turns out Chuuya doesn't care about N and considers Verlaine massacring all his friends a ''much'' more grievous offense]].
* DoItYourselfThemeTune: His voice actor, Creator/KisshoTaniyama, is the lyricist and lead vocalist of the band Granrodeo, who wrote and performed the anime's first opening theme alongside an ImageSong called Darkness My Sorrow.
* TheDragon: Seems to have taken Dazai's place as Mori's right-hand man after the former's defection. [[spoiler:After Mori is rendered in an Ability induced coma, Chuuya becomes the temporary leader of the Mafia.]]
* DramaticIrony: When he was fifteen, he would remind people who called him short that he was 'still growing', and refused to believe Dazai's prediction that he would never get taller and Dazai would surpass him. Anyone reading would know that in present day, Dazai towers over Chuuya who only stands at 5’3.
* EldritchAbomination: Not Chuuya, but [[spoiler:Arahabaki]] the [[spoiler:entity within him responsible for his Ability. It's described as a [[AnimalisticAbomination creature with a long, thick tail and fur made of black fire with red eyes, sort of resembling a human crouched on all fours]], though the anime's interpretation is more vague. Why anyone would want it confuses Chuuya, as Arahabaki is not a god]], instead being closer to a force of nature void of sentience or personality that simply destroys everything around it.
* EscapedFromTheLab: [[spoiler:Chuuya is probably a clone of the original Chuuya who was made in a military facility and modified to be a vessel for Arahabaki. Verlaine and Rimbaud arrived to capture him, but Verlaine decided to set Chuuya free instead and betrayed Rimbaud, leading to Chuuya destroying the facility and the surrounding area]]. He then escaped, not remembering his time there or what he was.
* EtTuBrute: He used to be the leader of a gang made of orphans. Port Mafia forced him to work for them by kidnapping some of the orphans and Dazai made Chuuya's companions distrust him so that they would turn against Chuuya since they believed Chuuya betrayed them first.
* EvenEvilHasStandards:
** Chuuya is a ruthless mafia executive, but does not view his subordinates as expendable canon fodder, and he utterly loathes Q for taking the lives of his men.
** In Fifteen, despite having just massacred a group of GSS soldiers, Chuuya is disgusted when Dazai continues shooting a corpse after performing a MercyKill, and angrily hits the gun away.
* EvilIsAngular: Chuuya is a Port Mafia executive, putting him at odds with the heroes in the ADA. He has TsurimeEyes, rather unnaturally spiky bangs, his tie forms four triangles around it, his vest ends in two points and the brim of his hat combined with the shoulders of his overcoat create sharp angles around his silhouette. Before joining the mafia, Chuuya largely lacked these traits.
* EvilCostumeSwitch: When he [[spoiler:shows up the prison to free Fyodor, he's shown to have replaced his formal, Port Mafia outfit with a leather jacket, light-colored belt, T-shirt, black pants and heavy boots]].
* EvilRedhead: He's one of the executives of Port Mafia and his hair is orange.
* {{Expy}}: A refined and more well-mannered Yata Misaki from ''Anime/ProjectK'', to put it simply.
* FaceHeelTurn: [[spoiler:He is turned into a vampire and arrives at the prison to free Fyodor as his pawn]].
* FaceMonsterTurn: In his right mind, Chuuya is highly unlikely to lend a hand, let alone kill, for someone who endangered the Port Mafia. However, [[spoiler:after being transformed into a vampire, he rushes to the prison and massacres the guards for Fyodor]].
* FalseFriend: It's noted by Dazai that while Chuuya is loyal to the Sheep, they only see him as a tool, calling the boy a "sheep in the eyes of wolves". The group doesn't listen to him and Shirase throws a fit when Chuuya refuses to attack the Port Mafia for them. Finally, after being tricked into thinking Chuuya betrayed them, the Sheep ally with the GSS and try to murder him.
* FashionableAsymmetry:
** His hair is significantly longer and his bangs are brushed back on the left side.
** As a teenager, he wore his hair in a ponytail slightly to the left side of his head, and had a pair of sunglasses hanging from a pocket on his coat.
** In the manga, Chuuya has a small chain on the left side of his hat, and his belt dangles off the right side of his waist.
* FedoraOfAsskicking: He wears a fedora, is a Port Mafia executive and one of the most powerful Ability users in the series. [[spoiler:This trope is played a tad more literally in that the fedora allows him to activate Corruption and do some major asskicking]].
* FieryRedhead: Hot-headed and quick to pick a fight with Dazai.
* FightsLikeANormal: Chuuya does not solely rely on his Ability to fight and is an extremely proficient martial artist, making him a threat even without the use of his powers.
* FirstNameBasis: Nobody seems to refer to him using his surname, not even his subordinates. See HistoricalInJoke below.
* FloweryInsults: Chuuya occasionally gets oddly specific when referring to Dazai. At one point he describes Dazai to Adam as a twisted, horrible human being who would sell a drowning person water and have the cunning to get away with it.
* FriendOrIdolDecision: In ''Storm Bringer'', Chuuya finally has a way of learning the answer to the question that's been plaguing him his whole life- [[spoiler:what is he? However, Guivre the Beast is about to attack Yokohama]], which would wipe out the city plus everyone he cares about. Unfortunately, the only way to [[spoiler:defeat Guivre is to use Corruption]], erasing the logs containing the answers. In a rare PetTheDog moment, Dazai allows Chuuya to decide and he chooses [[spoiler:to use Corruption, realizing the answer doesn't matter]].
* GeneralFailure: During the Cannibalism arc, Chuuya must kill Fukuzawa to save Mori, but manages to fail despite having the entire Port Mafia at his disposal and Dazai being unable to assist the ADA. Chuuya initially makes the smart move of having his forces attack immediately so the ADA can't strategize, before completely subverting the point of it by giving them the choice to hand Fukuzawa over, allowing them time to formulate a plan and escape.
* TheGlovesComeOff: Literally. Due to the DangerousForbiddenTechnique nature of his ability, he holds back in fights. However, if he's pushed far enough and [[PowerNullifier Dazai]] is around ([[TeethClenchedTeamwork and willing to cooperate]]), he'll take off his gloves and at that point, you should probably run.
** He has an affinity for using his power in addition to his kicks rather than punches, and even in the official game you'll see that most of his units use kicks as their attack animation, but the ones where he is in Corruption, he'll usually throw compressed gravity at enemies.
* GoodEyesEvilEyes: Like the other villains, Chuuya's eyes are colored black in the manga, though are also [[TsurimeEyes noticeably sharp]] and show much of his sclerae, giving him an aggressive and intimidating look. While using Corruption, his eyes widen considerably and his irises almost completely disappear.
* GravityMaster: His Ability lets him manipulate the gravity of anything that he touches, and due to the training he underwent, he can also [[spoiler: rain down bullets which leave the same impact on the ground as he left during the fight against Kenji and Yosano, despite not touching them directly]].
* HearingVoices: While under the effects of drugs, Chuuya hears voices. Things get ''very'' disturbing when he hallucinates the voice of Dazai trying to convince him to commit suicide, insisting they are alike because neither of them should have been born. Unlike most examples, Chuuya is aware it's fake but can do little besides scream that he's nothing like Dazai and try to endure the torment.
* HeightAngst: He displays this as a teenager, constantly insisting he is 'still growing' and becoming enraged whenever anyone comments on his size. It's uncertain whether he still has this as an adult since the only times Chuuya's height comes up is when Dazai insults it.
* HeroesLoveDogs: Inverted due to his status as a mafia executive. While this is absent from the main series, his ''Wan!'' counterpart loves dogs and wants to adopt one, though Dazai points out he would make a terrible owner as he does not know how to care for them.
* HiddenDepths:
** Chuuya's rude and violent demeanor stems from him having been the only source of protection for the Sheep during his time with the gang, so he doesn’t really know how to act around people who don't rely on him for everything and don’t need him to act tough.
** He's good at making friends and values his relationships with others, taking the deaths of those he cares about very hard.
* HistoricalInJoke:
** [[http://dazaiscans.tumblr.com/post/145701338910/ His real-life counterpart was also often called by his first name as well]]. This is probably because the real Chuuya wasn't born with the last name of Nakahara [[note]] It was ''Kashiwamura''. [[EveryoneIsJesusInPurgatory Make of that what you want]]. [[/note]] but was given it because the family from that side was rich.
** The real Nakahara Chuuya was also famous for being a bad drinker. He likes drinking, yet he became poisonous and violent every time he got drunk, earning him a bad reputation. He once got arrested because of it, and his first wife left him eventually sickened by his behavior.
** The strange relationship he has with Dazai, stems from one time that the authors had to work together. Real!Dazai had the idea of a literary magazine and had gathered some friends and poets for it. He had only invited Chuuya because it was said he was a genius poet at that time, and the two parted eventually after some insults and name-calling. [[OrphanedSeries The magazine ended after 1 issue]].
* HypnoTrinket: Inverted. [[spoiler:Whoever is wearing his hat can use the trigger phrases programmed into Chuuya, so as long as he wears it only he can decide to use them. The hat was made for Verlaine by Rimbaud to prevent him from being mind controlled]].
* {{Hypocrite}}: Chuuya hates it whenever Dazai manipulates him, but is more than willing to help Mori extort the ADA.
* ImageSong: Darkness My Sorrow, sung by his actual voice actor.
* ImmuneToBullets: Bullets have no effect on him because he can stop them through his gravity manipulation the instant they make contact with him.
* ImprobableAge: During his first year in the mafia, Chuuya was put in charge of facilitating jewel smuggling since it was a bloody business and his Ability was useful for overpowering others. Most of the other Port Mafia members were completely shocked that a sixteen-year-old boy was actually perfect for the job.
* InsistentTerminology: As a teenager, he wasn't 'short', he was 'fifteen and [[DramaticIrony still growing]]'.
* InTouchWithHisFeminineSide: He often gets tricked into acting like a woman. He complied with fulfilling Dazai's prediction of Chuuya walking and talking like an ''ojou-sama'' (or a rich young lady in the subtitles) once their conversation is over. He gets to roleplay as a woman for Kajii's plan in the drama CD at one point.
* ItWasAGift: His fedora hat was a present from Mori since it's a tradition for new members of Port Mafia to be given a garment from an older member. In Chuuya's case, his hat belonged to Randou. [[spoiler:It was actually made for Verlaine, however]].
* JerkWithAHeartOfGold: Chuuya tends to be very unpleasant, frequently swearing, insulting people and being prone to violent outbursts when enraged. Underneath that, he's extremely loyal and cares about his subordinates, never once being seen treating them cruelly, unlike the other executives. Chuuya is also capable of forming meaningful friendships with others and is surprisingly empathetic, [[spoiler:even giving up his hatred for Verlaine after understanding the man's plight]].
* KickChick: Gender-inverted example. In Fifteen, Chuuya exclusively used his legs the point of always having his hands in his pockets during fights, which he did to handicap himself so he could feel more human. As an adult, he uses punches more often but you still wouldn't want to be on the receiving end of a kick.
* LaserGuidedAmnesia: Chuuya has no memories of his life before seven years old, [[spoiler:the same age he merged with Arahabaki]]. [[spoiler:He likely didn't have a life before then, as he is probably a clone, but the logs that could have confirmed this were erased]].
* LikeAnOldMarriedCouple: The most positive way to interpret his relationship with Dazai. They are at each other's throats whenever they meet, yet they can understand and read each other's actions better than anyone. Also, they do appear to have a high amount of trust in the skills of the other and can rely on each other in dire situations.
* LikeBrotherAndSister: He and Kouyou Ozaki became this. He was under her tutelage and is notably the only one to address her as 'ane-san', a Japanese honorific specific to an older, mature sister figure (in contrast to 'onee-chan') especially used to address women in the mafia. (because those that are, are usually in a high position like Kouyou is). Kouyou seems to care for Chuuya as well, as while fighting Verlaine she threatens to dismember him for trying to poach her subordinate.
* LogicalWeakness: He's weak to extremely fast attacks and Abilities that don't follow the laws of physics. It's mentioned Pianoman could potentially kill him with his strings due to the speed of the winding devices being the most dangerous part. Poe and Rimbaud's Abilities are also not something Chuuya can deal with directly as they aren’t effected by the law of gravity.
* LongLostRelative: The epilogue of ''Dazai, Chuuya, Fifteen Years Old'' reveals that [[spoiler:Paul Verlaine is very much alive]] and eager to meet [[spoiler:his younger brother, Chuuya]]. [[spoiler:It turns out Verlaine is not really his blood relative, just another product of similar experimentation]].
* MadeOfIron: Chuuya gets thrown around quite a bit during fights, yet never winds up seriously injured. It's especially egregious during his fight against [[spoiler:Rimbaud]] where he gets repeatedly smashed by cubes, hit hard enough to send him flying several meters into a wall and his leg twisted ''three hundred and sixty degrees'' yet is no worse for the wear by the end. [[spoiler:Justified as he was subjected to experiments that, along with giving him an Ability, made him stronger and tougher than a normal human]].
* MajorInjuryUnderreaction: In Fifteen, [[spoiler:Rimbaud]] twists Chuuya's leg around three hundred and sixty degrees and yet his only reaction is to grunt in pain and keep fighting. Even afterwards he shows no signs that the injury impacted him.
* ManlyTears: Implied. After the Flags commit numerous felonies and go behind Mori's back just to get the information Chuuya had been desperately seeking, [[SuspiciouslySpecificDenial he suddenly accuses them of trying to move him to tears while screaming that he wouldn’t fall for it]]. He then proceeds to run out of the bar demanding no one look at his face and staying out of sight for the next forty seconds before re-entering, having composed himself. It's explained he has literally no experience having actual friends who don’t rely on him for everything, justifying this reaction.
* MechanicallyUnusualFighter: His [[https://bsdmayoi.fandom.com/wiki/0253_Nakahara_Chuuya permanent unit in the mobile game]] has a unique skill that deals damage based on the current amount of HP you have lost at the moment the skill is used instead of a set amount of damage based on ATK. As such, it will deal very small damage or even nothing at all (2.5 times 0 is still 0) when ones hp is full or almost full. When using him, you will need to gather as much damage without dying in order to make his skill effective. This makes using it a kamikaze move that is best saved up for when times get tough. As of the time of writing, there is no other SSR unit in the game using this sort of skill.
* ModifiedClone: [[spoiler:Chuuya is likely a clone made from the original Chuuya, and was altered so he would be able to house Arahabaki. Among other things, this made him physically tough but weak to poison]].
* MoreDakka: How does he fight against [[spoiler: the all-powerful Hunting Dogs Squad]]? [[spoiler: Summon dozens of bullets and using his GravityMaster powers to fire them in rapid succession, mimicking machine gunfire without a gun]].
* TheNapoleon: His exact height with the hat is just 160 cm (5'3") and compared to the Port Mafia, he is considered the shortest among them. In fact, the only people he ''is'' confirmed to be taller than are Q, Kenji, and Kyouka, who are all children under 15 years of age. In one of the chapters of BSD Wan, he's represented as a chihuahua. Interestingly, his real-life counterpart is even shorter than this, having a height of 151 cm.
* NiceHat: He's always seen wearing his signature fedora, which was originally worn by Rimbaud before being gifted to Chuuya upon entering the mafia. [[spoiler:It was made by Rimbaud to help Verlaine so he could resist the trigger phrases he was programmed with from working, though anyone wearing the hat can use them on him. It works the same for Chuuya]].
* NightmareFace: Has one when he's just fifteen while [[spoiler: revealing that he is Arahabaki]] [[https://66.media.tumblr.com/ad9cdbd62064e670317c0e53e7aaae59/tumblr_pq7xcldcrb1vrhy94_540.jpg here]].
* NinjaPirateZombieRobot: Chuuya is a mafia executive who's also a GravityMaster martial artist with a [[spoiler:god of destruction inside him]] that gives him a SuperpoweredEvilSide which came from [[spoiler:likely being the clone of the original Chuuya had been kidnapped and experimented on by the government]], has amnesia of the first seven years of his life after [[spoiler:[[EscapedFromTheLab escaping from the lab he was made in]], a LongLostRelative who's a master assassin and also a clone]] and was part of Double Black with [[TheDreaded Dazai]]. Also now a [[spoiler:vampire]].
* NothingButSkinAndBones: Chuuya was extremely malnourished to the point of passing out when he first met the Sheep, being described by Shirase as emaciated and close to death. When he was offered bread, Chuuya didn't even know what it was.
* NotSoDifferentRemark: In ''Storm Bringer'' it’s mentioned that he and Dazai can really only understand each other, as everyone listening in on their plans winds up severely confused. Played much more disturbingly later on, when Chuuya hallucinates Dazai telling him they both mistakes that never should have been born and insisting the two are the same.
* ObliquelyObfuscatedOccupation: While each of the other executives have specific roles they fulfill, it's never actually specified what it is Chuuya does.
* OffscreenMomentOfAwesome: While trapped in Poe's book, Chuuya gave up on solving the mystery and opted to randomly punch suspects until he escaped. This is fairly impressive considering he had to fight ''five hundred'' murderers without the use of his Ability and Poe fully expected him to die.
* OlderThanHeLooks: Chuuya is 22, the same age as Dazai, but his petite body makes him look only slightly older than Kenji and Kyouka, who are 14.
* OneManArmy: Chuuya is almost exclusively deployed to deal with major threats, either alone or accompanied by Dazai, and even as a teenager he was able to massacre a group of soldiers without receiving a scratch.
-->'''Ranpo:''' We'd better summon the defence teams back to base.\\
'''Fukuzawa:''' Is the enemy here? How many?\\
'''Ranpo:''' ''One''.\\
''Camera cuts to the security feed, revealing Chuuya breaking into the base.''
* OnlySaneMan: Occasionally. In ''Storm Bringer'' he is constantly exasperated by Adam's inability to understand humans and various eccentricities. During an OVA, he's stuck trying to prevent Higuchi, [[AxeCrazy Akutagawa]] and [[MadScientist Kajii]] from inciting various disasters at a hot spring.
* PeekABangs: [[spoiler:Played with. While he doesn't wear this style currently, his bangs often appear to hide the right side of his face. If he is the clone Chuuya, he never wore them like this to begin with, but if he is the original his bangs covered his right eye as a child]].
* PersonOfMassDestruction: In his memoir, Rimbaud had referred to Chuuya as something that looks like a little boy, but could destroy the entire world. Chuuya was also [[spoiler:responsible for creating the crater that eventually became Suribachi City]].
* PowerGivesYouWings: [[spoiler:During his first usage of Corruption, Chuuya gained black wings]].
* ThePowerOfFriendship: Chuuya is juxtaposed against Verlaine, as both are [[spoiler:the product of experimentation]], but while Chuuya had the support from others to deals with it, Verlaine never had that and eventually went insane. Chuuya also [[spoiler:eventually decides that those relationships matter more than whether or not he's a clone, enabling him to use Corruption and defeat Guivre the Beast]].
* PuppetKing: Played with. As a member of the Sheep, Chuuya was part of a group responsible for making decisions within The Sheep. However, he was mainly used as a weapon by the gang with his authority being blatantly ignored. However, most outsiders referred to him as the 'King of Sheep' as they assumed he was the leader due to his powerful Ability.
* RaisedInALab: [[spoiler:Chuuya may be this, depending on whether he is the original or the clone. When the original was very young, he was abducted by the military and cloned as part of a series of experiments to create an [[HumanWeapon artificial Ability user]] by [[SealedInsideAPersonShapedCan merging him with an entity called Arahabaki]]. Later, when Chuuya was seven, Rimbaud and Verlaine released one of the boys in a botched kidnapping attempt, who was found by Shirase and brought into the Sheep. The other remained in the lab for the next nine years until he was killed by N in front of the surviving Chuuya.]]
* RealityWarper: Downplayed. Chuuya's Ability is actually [[spoiler:a Singularity as it is self-contradictory in nature. This causes reality to warp, resulting in his gravity powers]].
* RebelLeader: After Chuuya joined the mafia there was fear that, due to the [[{{Blackmail}} circumstances of his recruitment]], he would become this by killing Mori and declaring war on the Port Mafia. [[spoiler:Mori had Pianoman invite Chuuya into the Flags to placate him and prevent this outcome]].
* RedOniBlueOni: As part of Double Black, Chuuya was the red to Dazai's blue, being short-tempered with powers allowing him to cause massive amounts of destruction, while Dazai kept his cool and was in charge of strategizing.
* {{Revenge}}: [[spoiler:Verlaine manipulates Chuuya so he will kill, N, who admittedly was responsible for torturing him and experimenting on him. However, Veraline's murder of Chuuya's friends ends up backfiring when Chuuya decides he wants Verlaine dead more than N, though he ultimately gives up on it]].
* RidiculouslyHumanRobots: There was confusion that Chuuya was this due to a translation error created when fans began attempting to translate ''Storm Bringer''. [[spoiler:He'a definitely not a robot, but could possibly be a clone]].
* SealedInsideAPersonShapedCan: [[spoiler:Chuuya is the human vessel of the GodOfChaos Arahabaki.]]
* ShortHairWithTail: His hair is cut a bit below his chin aside from a piece on the left side which drapes over his shoulder.
* SignatureHeadgear: He's almost always seen wearing a fedora, likely an homage to the most famous photograph of [[https://en.wikipedia.org/wiki/Chūya_Nakahara the poet he's named after]]. It's so notable that his character profile lampshades it by listing "hats" as one of his likes. Ranpo even calls him "Mr. Fancy Hat" at one point! [[spoiler:The hat is also the key to using Corruption, as whoever wears it while saying the trigger phrase can control the 'gate' within Chuuya or Verlaine]]. This would explain why he always makes sure it stays on during fights.
* SilentScapegoat: Dazai extorts Chuuya into joining the mafia by making the Sheep believe he turned traitor and threatening to kill them if he doesn't join. Chuuya agrees but refuses to tell Shirase the truth, even though it means his friend utterly loathes him, knowing that telling him would just put Shirase at risk. [[spoiler:Adam eventually does tell Shirase what happened, and he and Chuuya reconcile]].
* SirSwearsALot: He tends to use some ''colorful'' language in English translations, especially around Dazai. One fan even translated him greeting the [[spoiler:ADA]] as "Hey, stupid [[spoiler:Armed Detective Agency]] motherfuckers!" because while Japanese doesn't have actual curse words, he speaks in a rather rude manner and it apparently made sense for him to say.
* SitcomArchNemesis: Chuuya and Dazai absolutely despise each other and get into squabbles whenever they're in the same scene together.
* SpellMyNameWithAnS: Sometimes his first name has one U in it instead of two.
* StoryBreakerPower: Upon the Tainted Sorrow enables Chuuya to control the gravity of whatever he touches, and as he says himself- you can't escape gravity. He can apply his power to make himself virtually immune to bullets, break concrete by standing on it, smash opponents into the ground, etc, and that's before getting into what he can do with Corruption. As such, he is often either forced into positions where he can't use * brute force to solve his problems, or simply PutOnABus. Chuuya is also limited to using Corruption only when Dazai is around or his life is forfeit, and he's typically out of commission after he uses it.
* StrongAndSkilled: Along with having a powerful Ability, Chuuya is the Port Mafia's best martial artist, combining his skills and powers to deadly effect, subsequently meaning even if his Ability is nullified he's nowhere near vulnerable.
* SuperPoweredEvilSide: While he doesn’t exactly turn evil, when using Corruption, Chuuya is only capable of taking pleasure in destroying his surroundings, and with the power boost he does this by flinging black holes at everything in sight, laughing the entire time.
* SuspiciouslySpecificDenial: The Flags throw Chuuya a party and reveal they went behind Mori's back to obtain the information on his past he had been searching for. Instead of thanking them, Chuuya accuses his friends of trying to move him to tears and yelling repeatedly that he would never fall for that, before running out of the bar while ordering them not to look at his face.
* SympathyForTheDevil: While fighting [[spoiler:Guivre the Beast]], Chuuya is able to communicate with [[spoiler:Verlaine]]. At this point, despite everything the man as done, Chuuya [[spoiler:gives up hating him, realizing he can empathize with Verlaine plight and believing he himself would have probably turned out the same if he had been alone as well]].
* TomatoInTheMirror: [[spoiler:Chuuya discovers he is not in fact a human and had no past before he was released from a military facility by Rimbaud and Verlaine. He is a clone modified to house Arahabaki and the real Chuuya is dead. Made ambiguous by Dazai's theory that Chuuya is the original, and the fact that there's no evidence that can unquestionably confirm or deny this.]]
* TrademarkFavoriteFood: Wine. Though he [[CantHoldhisLiquor becomes pretty crazy when drunk]], he doesn't seem to be an alcoholic, since he does his job fairly well.
* TraumaCongaLine: Even more so than Atsushi. [[spoiler:Chuuya was made in a lab where he effectively tortured in order for him to house Arahabaki until he was released at which point he blew up the facility. After that he was found by the Sheep emaciated and at the brink of death, and was then used as a weapon by them until Dazai tricked the gang into trying to kill Chuuya and extorted him into joining the mafia. There, Chuuya finally gained genuine friends in the Flags, who found out his past for him against Mori's orders only to be massacred by Verlaine. He was tricked into being recaptured by the military and subjected to torture, learning he is likely a clone but soon had to erase the logs that could have confirmed it. In the case that Chuuya really is the original, that means he was kidnapped from his parents who were told he was dead]].
* TriggerPhrase: Chuuya is programmed so the phrase ''"Oh grantors of dark disgrace, you need not wake me again"'' will activate Corruption and overwrite his personality, [[spoiler:as long as they are wearing his fedora]].
* {{Tsundere}}: Has moments in the main story, and more apparent in the omakes and spinoffs (BSD Wan!, [[AlternateUniverse April fools' event]]).
--> '''Student!Chuuya''': "Huh?
--> Why should I self-introduce? Annoying.

--> ··· Arrggh —— ! Fine, fine, I understand ! I'll do it, is that okay for you ! ?
--> My name is Nakahara Chuuya.
--> I don't want to say it, but I'm sort of rivals with Dazai.
--> My favorite hat... I left it at home.
--> Not — not that it's confiscated for breaking school rules!

--> My height...? Just shut up if you still cherish your life."
** Canonically, his behavior with the Flags has shades of this. Despite obviously caring about them, is extremely abrasive and rude, constantly swearing, threatening violence and insulting them. When they effectively risk their lives just to get the information he's been desperately searching for, he accuses them of trying to make him cry, clearly touched by the gesture but having no idea how to deal with people who don’t depend on him for everything.
* UndyingLoyalty: One of Chuuya's notable characteristics aside from his temper is that he is fiercely loyal. As a member of Sheep, even when they believed he betrayed them and tried to kill him, Chuuya joined the Port Mafia on the condition they spared his gang. As a member of the Port Mafia, Chuuya refuses to kill the captive Dazai, no matter how much he wants to, when he realizes doing so would be considered treason.
* UnrealisticBlackHole: In his Corruption state, he's able to shoot balls of compressed gravity that act like black holes that swallow anything.
* VolleyingInsults: Whenever he is with Dazai, this happens.
* WhenAllYouHaveIsAHammer: He's a monumentally powerful Ability user but doesn't have a versatile skillset, so as a teenager, his approach for dealing with dangerous enemies was the same for gathering intel- kicking someone with his gravity powers. As an adult, he's more willing to talk things out, but only marginally.
* WideEyesAndShrunkenIrises:
** Chuuya's sclerae are proportionately very large and his irises are quite small, denoting his aggressive personality. This was extremely prominent when he was a teenager.
** Exagerrated during Corruption. When Chuuya activates it, his eyes widen considerably while his irises shrink almost completely out of sight and become blurry.
* WorthyOpponent: Chuuya doesn't often face people who can give him a run for his money, so he enjoys being given a challenge. He's elated when he realizes Kenji can withstand his strikes (see WouldHurtAChild below), but expresses disinterest at being challenged by [[NonActionGuy Ranpo]], until the detective starts pressing his [[BerserkButton berserk buttons]].
* WouldHurtAChild: Chuuya doesn't go out of his way to harm children, but has no issues with fighting Kenji when the boy proves to be a strong opponent, and later he tries goading Dazai into killing Q for murdering his subordinates.
* WrongContextMagic: Initially, Chuuya appears to be a powerful Ability user capable of manipulating gravity, which isn't too odd until it's revealed there's a second aspect to his power, Corruption, making him [[TheBerserker even more powerful at the cost of his mind]], which is completely unique to him. It turns out it's because [[spoiler:he's an artificial Ability user and Corruption is actually a Singularity, an event that should only be possible when two Abilities contradict each other, resulting in ''infinite power'']].
* YankTheDogsChain:
** During the Fifteen arc, Chuuya is extorted by his sworn enemy, the Port Mafia, who kidnap his friends and force him to work with Dazai on a mission, straining Chuuya's relationship with the Sheep and nearly getting [[spoiler:him killed and his corpse puppeteered by Rimbaud]]. Just when things finally seem to be looking up, with the mission over and Chuuya having learned about his past, the Sheep try to kill him due to Dazai machinations, and Chuuya is forced to join the mafia or sentence his friends to death.
** In ''Storm Bringer'', Chuuya suffers as he does not know whether or not he's really human. [[spoiler:His friends [[LoopholeAbuse manage to find a loophole]] in Mori's orders and go to great lengths to procure the information regarding his history, and throw a party for his first year in the mafia, showing Chuuya a what a good friendship is for the first time. Soon after, he learns the information was false and his friends are massacred by Verlaine]].