History Manga / BirdyTheMighty

* ArcherArchetype: Momiji was already a skilled archer before inheriting alien weaponry, and the new high-tech bow she retrieves from the dormant alien ship under her inn does nothing to slow her down.

Tsutomu Senkawa was an [[OrdinaryHighSchoolStudent ordinary teenager]] living in Tokyo. Birdy Cephon [[SpellMyNameWithAnS Altirra/Altera/Altaria]] is a [[HeadTurningBeauty beautiful]] and impulsive SpaceCop on a mission to stop a plot by alien criminals that involves Earth. One night, during a battle with the alien fugitive Geega, "Berserker Killer" Birdy accidentally attacks Tsutomu, [[AccidentalMurder fatally injuring him]]. To save his life, Birdy has to [[TwoBeingsOneBody merge with him]]. Now, as Tsutomu gets used to SharingABody with a girl, they both have to work together for Birdy to complete her mission while trying not to interfere with his ordinary life.

* CloningBlues: Altoros, The 192nd generation emperor, of a now scattered Altan empire. He is a young man but dying of illness as a result of being the product of a failing cloning process used to produce new heirs with Etania's blood.

* JourneyToTheCenterOfTheMind: The FreakyFriday / ManIFeelLikeAWoman and WholeEpisodeFlashback examples, the former setting it off and justifying the latter, where [[spoiler:Tsutomu had to rescue Birdy after getting stuck in her form and how he learned of her past. In the manga, this knowledge becomes very handy when some of Birdy's old classmates show up on Earth]].

* TalkingToThemself: Since Birdy and Tsutomu are SharingaBody and the one in control has no means to silently communicate with the one in the MentalWorld they often talk to each other aloud, and characters around them tend to think that they've gone crazy. In the manga, this is even taken so far as Tsutomu not understanding Birdy's superior's speaking, while Birdy herself can.

* NecessaryEvil: [[spoiler: As the Sanctum Sanctorum the backbone of interstellar travel and Federation technology, Birdy wiping them out at the end effectively strands a large portion of the Federation and other spacedwellers on Earth, forever without a means of returning home, forcing them to make peace and migrate. This is a key reason Revi is imprisoned for life afterward, regardless of his reasonings.]]

* StrikeMeDownWithAllYourHatred: Invoked. [[spoiler: Nechla acts callous over Kashu's death and goads Birdy with evil rhetoric, only so she will clear her mind of doubt and end her life.]]

* SpannerInTheWorks: Hazumi's volunteering for Hikawa Chemistry directly leads to Hikawa's downfall when Birdy raids their facility initially just to rescue her. After the timeskip, her new job at Agni is what Tsutomu and Birdy use for leads on their illicit activities.

* ADateWithRosiePalms: Tsutomu complains about how frustrating it can be sharing a body with Birdy since he doesn't have the privacy to take care of his... needs.

* ADateWithRosiePalms
** Due to Hikawa's experiments on him, Chigira initially cannot control his monstrously increased libido and fantasizes over Birdy while masturbating to her. He immediately expresses fear of what he's becoming after the deed.
** Subverted with Tsutomu in a way that's quite tragic. Late into the first half of the manga, Tsutomu contemplates masturbating as Birdy is asleep but stops himself realizing that it's not even his body, let alone how Birdy would easily notice and react to what he's doing. He then slumps into depressive contemplation over his circumstances, recognizing he has no genuine freedom or privacy in his current state.

* AdaptationalSkimpiness: While Birdy's uniform has always been {{Stripperiffic}}, her uniforms in the original manga and subsequently [[http://upload.wikimedia.org/wikipedia/en/8/84/Birdy_The_Mighty_cover2.jpg the OVA]] tend to look more like a SexyBacklessOutfit. In the remake manga, its sequel ''Evolution'' and ''[[http://upload.wikimedia.org/wikipedia/en/c/c2/Birdy_the_Mighty_Decode_DVD.jpg Decode,]]'' the torso section of her uniforms don't even cover the sides.

* OffModel: ''Decode 02'', Episodes 7 and 12, due to serious budget problems.

* OneHundredPercentAdorationRating: Revi among Altans during her tenure as head of Ministry of Science. Even after her fall from grace, she is viewed as a LivingLegend that inspires hope for the downtrodden.

* BathKick: Birdy (as Shion) does this in the first episode of the second season.

* TheyFightCrime: Not only part of the series premise, Creator/CentralParkMedia actually used the phrase on one of the [=DVDs=] for the OVA.

* DarkSkinnedBlond: Nechla Geeze. It helps that she's a human-looking alien.

* IllGirl:
** Sayaka, before a horrific car crash [[spoiler:and being infected with the Ryunka]].
** The remake manga has Chigira, who when young, was an ill boy treated by Christella Revi.

* {{Ojou}}: Sayaka in ''Decode''. Also an IllGirl and [[spoiler:PersonOfMassDestruction]].

* UnexplainedRecovery: Invoked with Sayaka Nagasuki after a car wreck. She's not expected to survive, but the next day she's fully recovered and cured of her previous IllGirl status. Her grandfather accepts it as a miracle but their maid is deeply concerned. [[spoiler:For very good reason, as the "miracle" was caused by an ancient biological super-weapon.]]

* HexagonalSpeechBalloon: Sometimes used whenever Birdy or Tsutomu communicate with each other while they're SharingABody. Due to the character not controlling the body being in an OutOfClothesExperience, they're only shows as with ShouldersUpNudity.

* AbsoluteCleavage: Revi often wears bath robes with the front completely open in the first half of the manga.

* AbsoluteCleavage: Birdy's uniforms usually have this as part of the torso section. Towards the end of ''Evolution'', the uniform takes this to another level by going past her navel.

* CryCute: Hayamiya breaks down in quiet tears after Bacillus' rampage on her school.

* AllThereInTheManual: It had a couple of audio dramas [=CDs=] released to try to help flesh out the universe, but these were largely rendered moot with the rebooted manga. However, between them adapting some stories from the original manga and the ''King of the Labyrinth'' created to celebrate the OVA, Skelezzo, Nechla Geeze, and Kinzel Hower are canon to the OVA.

* ItBeganWithATwistOfFate: Tsutomu's involvement in all of the chaos can be traced back to his decision to go out on a night walk (in the original OVA/manga and remake manga) or go check out an abandoned house (in the "Rebuild" anime).

* KnifeNut: Although they resemble needles or spikes, Nechla's signature weapons are functionally knives. She grips at them between her fingers to slash opponents and tosses them like throwing knives.

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* {{Meganekko}}: Sayaka wears large square glasses, although she isn't impaired enough to always need them.

* AdultFear: Chigira's whole situation in the first half of the story is rife with this.

* AdultFear: Much of what Sayaka goes through in the first season is presumably designed to be this from the perspectives of her caretakers, since she recovers from a car accident only to start acting strangely, and while they know there's something off about her there's nothing they can do and even ''she'' doesn't know exactly what happened, but [[spoiler:people start dying around her. Then Shyamalan shows up and tells Nakasugi he's taking Sayaka away....]]

* BlondesAreEvil: Subverted with Gomez. If nothing else, despite his occupation, he's a HairOfGoldHeartOfGold the more we learn of him.

* WaterSourceTampering: Hikawa plans to contaminate Japan's sewers with an experimental serum to turn them into metahumans enslaved to his will. Unfortunately for him, as he and Gomez know, all his plan would accomplish is wipe out Japan instead with the faulty serum.

* SamusIsAGirl: Not a strict use of the trope as Revi isn't an ActionGirl, but in the remake manga and ''Decode'' no one, not even Birdy, outside a few people know that she is a woman. Averted in the original manga and OVA where it's pretty well-known what gender Revi is. In the remade manga, [[spoiler:Tsutomu and his family even end up staying at Revi's house for a little without him or Birdy realizing it -- though that's because in the remake, Revi was born male and is only female due to being the result of a failed case of TwiBeingOneBody herself]].