History VideoGame / TouhouHyouibanaAntinomyOfCommonFlowers

* SpellMyNameWithAnS: Downplayed regarding the title of the game itself. "Antinomy" (a real, if obscure word) is sometimes misinterpreted or typo'd as "Antimony" (a chemical element) due to their similar spellings and the element being somewhat more well-known.

* MalignantPlotTumor: While the main plot is about the Yorigami sisters trying to rob a Prismriver concert, the game also places increasing focus on the side-effects that Perfect Possession is having on the Dream World (to the point where it's followed up on [[VideoGame/HifuuNightmareDiaryVioletDetectiin another game]]). The final route features the Yorigami sisters trying to atone for their crimes by cleaning up that mess. [[WordOfGod Apparently]], this reflects how Doremy's role grew larger and larger while the game was in development.

* MalignantPlotTumor: While the main plot is about the Yorigami sisters trying to rob a Prismriver concert, the game also places increasing focus on the side-effects that Perfect Possession is having on the Dream World (to the point where it's followed up in [[VideoGame/HifuuNightmareDiaryVioletDetector another game]]). The final route features the Yorigami sisters trying to atone for their crimes by cleaning up that mess. [[WordOfGod Apparently]], this reflects how Doremy's role grew larger and larger while the game was in development.

''Touhou Hyouibana[[note]]"Possession Flowers"[[/note]] ~ Antinomy of Common Flowers'' is a video game created by Team Shanghai Alice and Creator/TwilightFrontier for Windows computers in 2017, with UsefulNotes/Playstation4 and UsefulNotes/NintendoSwitch ports releasing in Spring 2021. It's [[GaidenGame the 15.5th videogame installment]] in the ''Franchise/TouhouProject'' franchise.

The game's official website can be found [[http://www.tasofro.net/touhou155/ here]] (in Japanese). The game's available on UsefulNotes/{{Steam}} [[https://store.steampowered.com/app/716710/_Antinomy_of_Common_Flowers/ here]].

*** Mokou & Mamizou[[note]]Added in Patch 1.10[[/note]] - Mamizou runs around on fire, Mokou (In fire rat form) clinging to her back.

* UnderestimatingBadassery: Both of the Yorigami sisters (especially Jo'on, who's a snob) underestimate [[spoiler:Yukari, who's one of the biggest powerhouses in Gensokyo]].

*** Mokou & Mamizou[[note]]Added in Patch 1.10[[/note]] - Mamizou runs around on fire, Mokou clinging to her back.

*** Mokou & Mamizou[[note]]Added in Patch 1.10[[/note]] - Mamizou runs around on fire, Mokou (in her BalefulPolymorph form) clinging to her back.

* UnderestimatingBadassery: Both of the Yorigami sisters (especially Jo'on, who's a snob) underestimate [[spoiler:Yukari. Who's one of the biggest powerhouses in Gensokyo (the franchise's setting)]].

* UnderestimatingBadassery: [[spoiler:Both of the Yorigami sisters (most notably Jo'on, a snob) underestimate Yukari. Who's one of the biggest powerhouses in Gensokyo.]]

* UnderestimatingBadassery: Both [[spoiler:of the Yorigami sisters (most notably Jo'on, a snob) underestimate Yukari. Who's one of the biggest powerhouses in Gensokyo.]]

* UnderestimatingBadassery: [[spoiler:Both of the Yorigami sisters (most notably Jo'on, a snob) underestimate Yukari. Who's one of the biggest powerhouses in Gensokyo.]]

The source of the [[VideoGame/TouhouShinpirokuUrbanLegendInLimbo Urban Legend Incident]] may have been resolved, but its effects are yet to fade from Gensokyo. Taking advantage of it, someone has brought to life the phenomenon of Perfect Possession - a simple method by which anyone can possess another person, then [[PowersViaPossession replace that person's mind and body with their own]]. Deciding that the best way to figure out the technique's quirks and weaknesses is to try it out for themselves, a number of characters pair up and start searching for the ones behind it.

A {{Sequel}} to ''VideoGame/TouhouShinpirokuUrbanLegendInLimbo'', this game features the Master and Slave mechanic - a combination of TagTeam and SuperMode in which the "Master" character can expend some of their Occult Meter to temporarily switch to a powered-up version of the "Slave". For more detailed gameplay information, see the [[https://aocf.koumakan.jp/Antinomy_of_Common_Flowers_Wiki wiki]].

* AntagonistTitle: The "Antinomy of Common Flowers" is the Yorigami sisters themselves - PolarOppositeTwins whose [[ThemeTwinNaming names come from]] the [[https://en.wikipedia.org/wiki/Erigeron_annuus Daisy fleabane]] (ヒメジョオン, ''himejōn'') and [[https://en.wikipedia.org/wiki/Erigeron_philadelphicus Philadelphia fleabane]] (ハルジオン, ''harujion'').

* DamnYouMuscleMemory: The control scheme has changed drastically from ''Urban Legend in Limbo''. Spell Cards are now mapped to X+C instead of A, S now shields you first before you press a direction to dash, and A now switches to your slave. However, Last Words are still mapped to A+C, meaning that you might accidentally switch to your slave went you meant to pull off your Last Word, making you have to fill up your Occult meter again just for a second chance.
* DevelopersForesight: When a player pick their characters, the game uses parts of both characters' BossSubtitles, followed by "Duo". If one of the characters is either Ichirin (who fights with Unzan via SummonMagic) or Jo'on (who is a PuppetFighter with Shion), the end part of the title will instead be "Trio"; naturally, having Ichirin and Jo'on as a team will have the game call them a "Quartet".

** Bosses from the Dream World have [[VideoGame/TouhouKanjudenLegacyOfLunaticKingdom Doremy]] as a Slave... but when summoned she takes no actions to defend herself, effectively giving the player a few free hits.
*** [[JustifiedTrope Justified]], as in most cases Doremy is only supervising them and plans to get them back to the real world. She's actually making the player's character job easier. When she's part of player parties, she's either protecting them (Sumireko) or the dream self is happy to go back once it's satisfied (Dream Reisen).

*** Byakuren & Miko - They jump on-screen together, turn to face each other and [[PunchParry perform locking kicks]].

-->'''Shion:''' [[spoiler:"I've never been serious about this until now. If I let it all out, everyone will be unfortunate, including me! But I've had enough. Who cares about winning or losing? When I'm done here, we'll all be losers; the shrine maiden, me, and you too Jo'on! ''[...]'' No one wins. No one finds happiness. I'll show you a world where we all suffer together! ''[...]'' [[BadassBoast The plague and poverty gods were a match made in Hell? Don't make me laugh! I can bring Hell all on my own!]] I am the god of poverty, Shion Yorigami! Die cowering before poverty!"]]

* MalignantPlotTumor: While the main plot is about the Yorigami sisters trying to rob a Prismriver concert, the game also places increasing focus on the side-effects that Perfect Possession is having on the Dream World (to the point where it's followed up in [[VideoGame/HifuuNightmareDiaryVioletDetector another game]]). The final route features the Yorigami sisters trying to atone for their crimes by cleaning up that mess. [[WordOfGod Apparently]] this reflects how Doremy's role grew larger and larger while the game was in development.

* NotHimself: As the incident continues, many characters seem to be acting somewhat strangely. This turns out to be an unexpected side-effect of Perfect Possession - [[spoiler:it ejects the Master's "dream self" from the Dream World into the real world]].
* ProgressiveInstrumentation: In the demo, the title screen has an ethereal piano theme. The full game has four variations of this theme (''Seeds of the Incident'', ''Sprouts of Suspicion'', ''Branches Reaching to the Truth'' and ''Blizzard of Scattering Possession Flowers'') which switch out as the player progresses through the game - first adding a drum kit, then synth bass, then violin, and finally a trumpet.

* ShadowArchetype: The characters' dream selves that were ejected into Gensokyo as a side effect of perfect possession. Reisen's story mode stars her own dream self, escorted by Doremy Sweet, as she goes on a rampage and picks fights with all the characters that she was previously forced to defend herself from in ''Urban Legend in Limbo''. Doremy comments on most characters' dream selves after winning against them. And finally, Joon and Shion's story mode involves them apprehending the remaining dream selves running around Gensokyo so they can be returned to the Dream World, in return for being pardoned for causing the Perfect Posession incident in the first place.

** Byakuren's admits to Joon and Shion that she makes her followers do mundane chores for her and lies about it being a part of their training. And also jokes that she planted a bomb in their heads, just in case they tried escaping their punishment. Doremy notes that Byakuren's dream self is awfully similar to her real self, and assumes that it's because of her training.

** A line from Doremy implies that Joon's dream self [[IJustWantToBeNormal Just Wants To Be Normal]], while Shion always dreams about food.
** Kasen's dream self tries to pull a WeCanRuleTogether with Joon. Probably an allusion to [[spoiler:her past self as ''The Cunning and Treacherous Oni'']], from Manga/WildAndHornedHermit.

* SpellMyNameWithAnS: Downplayed regarding the title of the game itself. "Antinomy" (a real, if obscure word) sometimes misinterpreted or typo'd as "Antimony" (a chemical element) due to their similar spellings and the element being somewhat more well known.
* ThatOneAttack: InUniverse example. The Yorigami sisters' ''Possession Exchange "Absolute Loser"'' causes Jo'on to switch Slaves with the PlayerCharacter. The voluntary form of Perfect Possession can only be ended by the Master while involuntary can only be ended by the Slave, meaning that the player is [[HeadsIWinTailsYouLose forced to fight their own ally while saddled with Shion's bad luck]]. It's only [[PuzzleBoss countered]] when [[spoiler:the Yukari[=/=]Reimu team switch the positions of Master and Slave on both teams just before the spell activates, resulting in the player controlling Reimu[=/=]Jo'on against Shion[=/=]Yukari]].
* UnderestimatingBadassery: [[spoiler:Both of the Yorigami sisters (most notably Jo'on, a snob) underestimate Yukari. Who's one of the biggest powerhouses in Gensokyo]].

** ''Sumireko'': {{Doppelganger}} (changed from ''[=ULiL=]'')

-->[[spoiler:"I've never been serious about this until now. If I let it all out, everyone will be unfortunate, including me! But I've had enough. Who cares about winning or losing? When I'm done here, we'll all be losers; the shrine maiden, me, and you too Jo'on! [...] No one wins. No one finds happiness. I'll show you a world where we all suffer together! [...] [[BadassBoast The plague and poverty gods were a match made in Hell? Don't make me laugh! I can bring Hell all on my own!]] I am the god of poverty, Shion Yorigami! Die cowering before poverty!"]]

* WorldOfCardboardSpeech: [[spoiler:After Jo'on is rendered unable to fight, both she and Reimu treat Shion's defeat as a foregone conclusion, claiming that her only use is being ''[[TheJinx very good at losing]]''. This is the last straw for the long-beleaguered Shion, who ''snaps'' and [[TrueFinalBoss starts clouding the stage with overwhelming amounts of negative energy]] (though the ending clarifies that this is something she can't do very often).]]
-->[[spoiler:"I've never been serious about this until now. If I let it all out, everyone will be unfortunate, including me! But I've had enough. Who cares about winning or losing? When I'm done here, we'll all be losers; the shrine maiden, me, and you too Jo'on! [...] No one wins. No one finds happiness. I'll show you a world where we all suffer together! [...] [[BadassBoast The plague and poverty gods were a match made in Hell? Don't make me laugh! I can bring Hell all on my own!]] I am the god of poverty, Shion Yorigami! Die cowering before poverty!"]]