History Manga / JoJosBizarreAdventureCrazyDiamondsDemonicHeartbreak

* YouCantFightFate: Chapter 10 reveals that whenever a target is locked into one of Pet Sounds's memories, they're unable to do anything to stop it, and must experience every event, including attacks. Josuke learns this the hard way, as when he tries to stop an icicle being fired at him due to DIO commanding Pet Shop to use Horus, Crazy Diamond's arm phases right through the icicle, and he ends up being pierced by it.

* GambitRoulette: It's revealed in Chapter 8 that DIO was specifically targeting Kakyoin as his tool to take out Jotaro, being the most recent member of the Joestar Bloodline, and that [[spoiler:he was hoping for Ryoko to get lost while the Kakyoin family was on vacation in Egypt so that he could corner her while Kakyoin is looking for her, which ultimately does end up happening, giving DIO the perfect opportunity to launch a flesh bud directly in Kakyoin's forehead whilst he's defending Ryoko]].

* AdaptationalJerkass: Josuke was already more harsh in the manga, but the unabridged story of the untranslated novel goes to incredible lengths to make him unsympathetic and unheroic. [[spoiler:Not only was the reason for his sensitivity over his hair made into something completely different, but he obviously made up his entire 'hero story' on a whim, 'borrowing' the idea from Ryoko. He also says that if he had a girlfriend who asked him to change his hairstyle, he would '''beat her'''.]]

** Noriaki Kakyoin's death in Egypt became a news sensation, with numerous news outlets and magazines speculating about his demise. The manga also introduces [[spoiler:Kakyoin's cousin, Ryoko Kakyoin]].

* SenpaiKohai: Despite not even attending the same school, Josuke refers to Ryoko as "Senpai" because of her seniority.

''[=JoJo's=] Bizarre Adventure: Crazy Diamond's Demonic Heartbreak'' (ジョジョの奇妙な冒険 クレイジー・Ｄの悪霊的失恋 ''[=JoJo=] no Kimyō na Bōken: Kureijī Daiyamondo no Akuryō-teki Shitsuren'') is a SpinOff of ''Manga/JoJosBizarreAdventure'', based on the parts ''Manga/StardustCrusaders'' and ''Manga/DiamondIsUnbreakable'', and is considered of dubious canonicity. Its first chapter was announced to be included in the January 2022 issue of ''Ultra Jump'', and was released on December 18, 2021. A LightNovel adaptation titled ''Crazy Heartbreakers'' will be released on June 19, 2023.

* AllPartOfTheShow: After using Crazy Diamond to knock out a few mind-controlled girls and free them from Petsounds' Stand, Josuke proclaims that it was the conclusion of a street performance by Hol Horse, which calms down both the girls and the confused civilians.

* AnArmAndALeg: [[spoiler:When trying to [[ShootTheDog shoot Petsounds down]], Hol Horse shears one of its wings off. It would be understandable to assume that [[NoOneCouldSurviveThat the fall would kill Petsounds]], but it returns at the end of Chapter 8 to help Karaiya [[HeKnowsTooMuch silence Kiyohara]].]]

** Invoked by Petsounds' Stand. It attacks people from afar by stuffing their bodies with punch cards, which then control them against their will. The victims are fully aware of what's happening, but they are powerless to stop themselves. The victims can also recall and hear memories of DIO and his voice, for some reason.

*** In Chapter 3, Petsounds' Stand replays Hol Horse's memory of DIO chiding him for failing to kill the Joestars back in Egypt, and controls him to shoot Inspector Hiraoka on the back of his head just like how he tried to assassinate DIO years ago. [[spoiler:Fortunately, Hol Horse is able to escape without any blood on his hands when he sees a gleam from a green traffic light, reminding him of Kakyoin's final Emerald Splash and breaking Petsounds' control by giving him a different memory to focus on.]]
*** During the climax of the final fight, [[spoiler:Karaiya attempts to use Petsounds' memory of DIO's Stand barrage to paralyze Josuke long enough for him to get the final blow in]].

** The ArcVillain may be indirectly inspired by Kars of ''Battle Tendency'' fame: [[spoiler:Karaiya's grandfather is [[NaziGrandpa implied to be a Nazi]] who was sent on a mission in Switzerland. There, he'd witness "what it meant to transcend all of creation", heavily implying he saw Kars' transformation into the Ultimate Lifeform, and he intends for Karaiya to have that same ambition to stand above everyone else]].

* CentralTheme: Hope for the future versus dread of the past. Thoth makes an appearance in this part, giving its vague predictions of the future as it always has. Ryoko has to place her faith into them to find the answers she wants. The major enemy Stand user is Petsounds, who can bring back memories and force victims to feel whatever Petsounds is willed to make them feel. Ryoko is a high school graduate who is stuck with her memories of a dead family member, and Josuke is a high school freshman who's eager to see what he can do.

* CloseRangeCombatant: Boingo pieces together that Petsounds' Stand ability is more effective when he's closer to his victims, as when he and Josuke are affected by Petsounds' Stand when the parrot is extremely close to them, the memory they experience of Egypt is completely lifelike due to the feel and scent, and when DIO in the memory orders Pet Shop to use Horus on his original owner, the icicle has an actual effect on Josuke, who's unable to hit the icicle back due to Crazy Diamond phasing through it.

** If anyone is controlled by Petsounds' Stand, their eyes will turn blank and gain a circular dimpled texture like punch cards, similar to the eyes of the Stand Moody Blues from ''[[Manga/JoJosBizarreAdventureGoldenWind Golden Wind]]''. Much like Moody Blues, Petsounds's Stand's ability involves replaying past events.

** After Josuke's first encounter with Petsounds' ability, he and Hol Horse reconvene at a public fountain, which resembles the one Jotaro met Josuke at, complete with having a turtle there as well.

** During the final chapters, when Ryoko [[spoiler:is possessed by Petsounds, she apparently has an encounter with the past version of Kakyoin -- specifically during the fight against Telence D'Arby, when he's turned into a doll]].

* CruelAndUnusualDeath: Chapter 11 reveals what DIO did to Pet Shop's original owner. He [[GasolineDousing doused him with gasoline]], had Pet Shop use Horus to freeze the gasoline on his body, lit the gasoline around him on fire with a match, and had Pet Shop repeatedly stab him with Horus' icicles until the fire eventually thawed him out and set ''him'' on fire. And all because DIO wanted to see how afraid he got before he died.

* ExtremeDoormat: Petsounds itself has no ambitions on its own and only acts when it is commanded to do so. For ten years, it didn't use its powers and therefore didn't make any chaos. However, once Petsounds got stolen, it serves its new tamer without question.

* HeroicWillpower: Hol Horse demonstrates a surprising amount of this over the story (given his long-standing reputation as an avaricious coward), which lets him survive Petsounds' attempts to control him. First, he avoids having to shoot Inspector Hiraoka by focusing on a different memory (in particular, a reflected green traffic light, reminding him of Kakyoin's final Emerald Splash against DIO), and escapes the helicopter gunship illusion by rationalizing to himself that the fear he's feeling is nothing compared to his failed attempt to kill DIO.

* KansasCityShuffle: After having to face a multitude of Morioh citizens under the influence of Petsounds' Stand, Hol Horse and Josuke make it for the subway station, thinking its spacing would be too cramped for Petsounds to sneakily fly through. As it turns out, though, this is the exact situation Petsounds wanted the two to be in, and uses its Stand to force ''everybody'' in the station to reenact the events of a military helicopter shooting in Egypt.

** Since Petsounds' Stand's Ability forces the victim's mind to relive a past event, a surefire way to break free from it is to render yourself unconscious; in Chapter 11, Josuke manages to break himself and Boingo free from Petsounds' influence by strangling their own necks with ropes.
** Petsounds's ability is only as powerful as its voice mimicry. Therefore, [[spoiler:Josuke defeats it by breaking its beak in such a way so that it cannot mimic voices accurately anymore]].
* TheManBehindTheMan: Chapter 8 reveals that [[spoiler:Karaiya was behind Kiyohara the whole time and he is the one who got his hands on Petsounds.]]

** The missing parrot, named [[Music/PetSounds Petsounds]], which was previously owned by Pet Shop's previous owner, is likely a reference to the parrot seen with DIO early in the ''Stardust Crusaders'' manga, which never showed up again and was fully replaced with Pet Shop in the anime.

* OriginalGeneration: While this spin-off has characters from multiple parts (mostly Part 3 and Part 4), it also introduces a few new characters: Ryoko Kakyoin, Petsounds, Kazuki Karaiya and his grandfather, and Koji Kiyohara.

* PosthumousCharacter: The two most prominent ones are DIO and Kakyoin, who both affect the current set of characters heavily. The memories of DIO still haunt his former minions, while Ryoko is desperately driven to find the truth behind Kakyoin's death. The original tamer of Petsounds and Pet Shop has also been killed by DIO in the past, which is why the remaining bird, Petsounds, is so important to his mother.

* PunchClockVillain: Petsounds hasn't used its abilities for 10 years, but it is doing anything its current tamer is commanding it to do, regardless of the actions' morality. [[spoiler:This is because Karaiya made Petsounds consume a bit of his ear's flesh, in the process allowing Karaiya [[PeoplePuppets to use the Stand himself]].]]

* ShootTheDog: When Hol Horse is faced with the conundrum of [[spoiler:continuing his mission versus stopping Petsounds from causing more casualties, he chooses to shoot down Petsounds to prevent further catastrophe. Although we later see that Petsounds is still alive.]]

** The parrot Petsounds is named after Music/TheBeachBoys album ''Music/PetSounds''.

* TimeMaster: Time manipulation isn't a power used by the ArcVillain, but he attempts to gain some level of influence similar to it. [[spoiler:Karaiya does get his hands on Petsounds and later Thoth, which have "the power of the past and the future", respectively. Petsounds' Stand has the ability to make people reenact and experience past events, even if it's not their own past. Thoth is a manga/comic that can predict the near future.]]

* VomitIndiscretionShot: After Josuke heals the possessed man who swerved his car at him and Hol Horse, the man suddenly vomits out what appears to be a deck of punch cards, which vaporizes almost immediately. This would later happen to other characters affected by Petsounds' Stand.

* YouCantFightFate: Chapter 10 reveals that whenever a target is locked into one of Petsounds' memories, they're unable to do anything to stop it, and must experience every event, including attacks. Josuke learns this the hard way, as when he tries to stop an icicle being fired at him due to DIO commanding Pet Shop to use Horus, Crazy Diamond's arm phases right through the icicle, and he ends up being pierced by it.

* SeriesContinuityError: In chapter 15, [[spoiler:while the women that Hol Horse saved from DIO's mansion are potentially implied to be the mothers of Giorno, Ungalo, Rikiel, and Donatello, something that goes against that is how Giorno had already been born in 1985. The rest of DIO's sons except Ungalo have birth years before 1988 (''Stardust Crusaders''' events), with Ungalo being born in 1988]].

* SecurityBlanket: Thoth is this for Oingo. He's owned the book for practically his whole life and the book is a ClingyMacGuffin, so when one of Thoth's predictions calls for Oingo to just throw it away, he obeys, knowing that following the predictions brings good fortune -- and then immediately falls into a dejected state when the book fails to reappear near him. When he first appears in Morioh without it, he's curled up in the fetal position under a policeman's desk.

* CallForward: Like his takedowns of Angelo and Teranosuke, Josuke employs a similar attack on the ArcVillain. [[spoiler:He merges Karaiya's body with a construction site's tarp and an acetylene torch, turning him into a living hot air balloon.]]

* ArtifactTitle: A weird example. The "Demonic" part in Crazy Diamond's Demonic Heartbreak is a CallBack to part 3's intro, where Jotaro still doesn't know what a Stand is and assumes Star Platinum's rampages to be a case of nefarious possession. However, while Josuke in this series is in the same state of not yet knowing what a Stand is, he makes no similar assumptions to his nephew, instead seeming to think of Crazy Diamond as simply some psychic power he always had.

* ItsAllMyFault: Ryoko is revealed to blame herself for [[spoiler:her cousin Noriaki Kakyoin falling under DIO's control. When they were in Egypt before the events of ''Stardust Crusaders'', Ryoko got lost in Cairo and Kakyoin went to look for her. This left them alone with DIO that night, and Kakyoin's effort to protect his cousin led him to be infected by one of DIO's flesh buds. Ryoko believes that if she hadn't gotten lost that night, then her cousin would still be alive.]]

* IronicEcho: Josuke {{invoke|d}}s this on the ArcVillain in Chapter 15: [[spoiler:turning him into a human hot-air balloon, so he can quite literally "be high above everyone, just like he wanted".]].
* ItCanThink: Chapter 16 suggests that [[spoiler:Thoth was acting of its own accord during the events of the story; it wanted to escape DIO's legacy, independantly from Boingo]].

* BadAssLongcoat: Hol Horse dresses in a duster on top of his original clothing, to further the wild west gunslinger aesthetic he carries around with him.

** The ArcVillain may be indirectly inspired by Kars of ''Battle Tendency'' fame: [[spoiler:Karaiya's grandfather is [[NaziGrandpa implied to be a Nazi]] who was sent on a mission in Switzerland. There, he'd witness "what it meant to transcend all of creation", heavily implying he saw Kars' transformation into the Ultimate Lifeform]].
** Like his takedowns of Angelo and Teranosuke, Josuke employs a similar attack on the ArcVillain. [[spoiler:He merges Karaiya's body with a construction site's tarp and an acetylene torch, turning him into a living hot air balloon.]]