[[quoteright:300:http://static.tvtropes.org/pmwiki/pub/images/kampfer_2.jpg]]

''Kämpfer'' (the umlaut is the difference between being [[GratuitousGerman German for "fighter"]] and camphor) is a Japanese light novel series with both a manga and an anime adaptation available. The anime aired in the fall of 2009.

The story starts when Natsuru Senou, a normal high school boy, wakes up to find himself mysteriously transformed into a girl. Immediately afterward, he finds a bracelet strapped to his wrist that he didn't remember putting on, and then a stuffed tiger doll named Harakiri Tora telling him that he was chosen to become a Kämpfer. On one hand, Natsuru gains great strength and fighting abilities. On the other hand, it's apparently a rule that Kämpfers can only be girls, so any boys that are chosen transform into girls when their powers activate, while those who were girls from the start transform in other ways.

HilarityEnsues, at least until other Kämpfers decide to fight him for reasons unknown even to them. Somehow, the Kämpfers are chosen by talking stuffed animals called Messengers, who are being distributed by an unrevealed entity only known as "The Moderator." The Messengers then inform the Kämpfers who have been chosen that they have to fight each other to the death.

[[AC:Has a [[Characters/{{Kampfer}} character sheet]] of its own.]]

The manga has been licensed by Tokyopop for Western markets and was set to be released in June 2011 but its future is in doubt in the United States due to the company leaving the United States. The anime has been licensed by Sentai Filmworks and was released in January 2011.

A set of two [=OVAs=] under the title ''Kämpfer für die Liebe'' ("Kämpfer: Fighter for Love") were released in spring of 2011. The first is a kind of sequel to the series and the second is pure [[{{Fanservice}} waitress fanservice]]

Completely unrelated to [[MeinKampf that other Kampf]].
----
!!!Tropes:

* TwelveEpisodeAnime: Specifically, 11 plot episodes and a Christmas episode.
* AboveTheInfluence: Despite [[IdiotHero many]], [[FauxActionGirl many]], [[PinballProtagonist many]] [[SatelliteLoveInterest personal]] [[WhatMeasureIsANonBadass flaws]] Natsuru has had the decency not to take advantage of [[InnocentFanserviceGirl Kaede]] in the face of [[FuroScene many]] opportunties.
** Kaede, on the other hand...
* [[AbsurdlyPowerfulStudentCouncil Absurdly Powerful Student]] [[StudentCouncilPresident Council President]]: She's able to get [[spoiler:Natsuru transfered to the girls' side of the school]], no questions asked. She also has a throne room. In the second episode of the anime, Natsuru wonders how much power does she wield.
* ActionGirl: Most of the Kämpfers.
* ActionPrologue: The show starts out with a very fast-paced scene where a certain girl runs for her life from another girl with a pistol, but was abruptly cut by the show's introductory sequence. See the MoodWhiplash entry below for details.
* AesopAmnesia: Dammit Natsuru! Stop lusting over the BigBad! She brain washed you, and tried to kill the people who actually care about you!
* AllLoveIsUnrequited: [[SugarAndIcePersonality Shizuku]], [[HotLibrarian Akane]] and [[UnluckyChildhoodFriend Mikoto]] all like Natsuru, who is [[SatelliteLoveInterest hopelessly]] in love with [[SchoolgirlLesbians Kaede]], who in turn lusts for [[AttractiveBentGender Female]] [[LovesMyAlterEgo Natsuru]]...
* AllPartOfTheShow: The play in episode 5.
* AssShove: [[spoiler:Done by Shizuku to Mikoto to help the latter out of being mind-controlled.]]
** And it's done [[{{Naruto}} Thousand Years of Death]] style.
*** With a cover of the {{Ode to Joy}} as backing music.
* AttemptedRape: Kind of averted. Natsuru gets mind-controlled and sent to rape [[spoiler:Shizuku]]. But after pushing her onto the bed, he kind of just stands there at a loss. AboveTheInfluence indeed.
** Happens to Natsuru frequently either gender, but mostly his female form.
* AttractiveBentGender: Natsuru. so much so that it leads to many an AttemptedRape by her classmates when she [[spoiler: transfers to the girls' side of the school]]
* AuthorAppeal: Girls with guns and swords, SheFu, LesYay all over the place, and FanService even ''more'' all over the place...
* BathtubBonding: Akane and Mikoto in episode 13.
* BattleAura: So hot they cause ClothingDamage!
* BeachEpisode: Episode 9. And it's a [[spoiler: MoodWhiplash one at that!.]]
* BehindTheBlack: One of Shizuku's many talents is completely avoiding notice until she speaks, at which point the camera shifts slightly to the side to include her.
* BeyondTheImpossible: [[spoiler: Natsuru both marries and [[ScrewYourself has a little girl with himself.]]]] Despite this the trope could be averted because [[MindScrew there was a lot of weird stuff in that episode.]]
* BigBad: After episode 10 we have to guess who it is anymore.
* BigBadFriend: While they are in real terms friends, in this instance it's more of a case of [[spoiler: Big Bad Love Interest]].
* BitchInSheepsClothing: Shizuru acts this way from time to time (at least Natsuru thinks so), played straight with Kaede, especially later in the series.
* BlandNameProduct: "VAGUE" lingerie store in Episode 4. Also, a box of "Packy" in Episode 7.
* BloodKnight: A more subtle example. Shizuku isn't very loud or blood-crazed, but she initially claims that her reason for fighting is "Because." [[spoiler: We later find out that she ''does'' have a reason for fighting.]]
** Kämpfer-Akane plays this pretty straight.
* BottomlessMagazines: Played straight, Gewehr have no need to reload and their guns never jam.
* BreakingTheFourthWall: Characters constantly are pointing out who other characters are voiced by in real life. Although usually they'll only say they sound a lot like the voice actor, occasionally they'll say something like: ''"For something voiced by Creator/NanaMizuki, you sure say some pretty queer things!"'' It should be noted that those voice references actually ''did'' occur in the light novel. Natsuru makes the [[Anime/{{Doraemon}} Shizuka-chan]] reference, while the Tamura and Mizuki references came from otaku-TV enthusiast Akane. That burnt lion, the oldest of the Entrails Animals, hasn't been voiced yet, but according to his description in the novels, he's voiced by someone who dubs a lot of foreign movies.
** The line "For something voiced by Creator/NanaMizuki, you sure say some pretty queer things!" is actually closer to "For something with a voice similar to Mizuki Nana..." in the original Japanese. Guess the Fansubbers are getting sick of using the same line.
** Also as of EP 9, all 4 of the White Kämpfers are revealed at the credits (Ueda Rika in Ep 8 though, hence the 'as of') to be voiced by seiyuu with the same surname as the characters, right down to every single kanji. Not a really blatant example of Breaking the Fourth Wall, and could be a new method of painting it instead though.
* BridalCarry: Natsuru does this to Kaede in episode 5's beauty pageant. She's even wearing a wedding dress.
* ButForMeItWasTuesday: [[spoiler:Kaede]] mocks Shizuku about the death of her friend, saying the name isn't even worth remembering.
* CelebrityParadox: Kuro Usagi's voice reminds Akane of Creator/YukariTamura. Which it should, since she's Usagi's voice.
* ChekhovsGun: The sea slug trinket Natsuru gave to Shizuku ends up [[spoiler: snapping him out of Kaede's hypnosis.]]
* ChekhovsGunman: Probably not much of a ChekhovsGunman but remember Kaede tossing out those stuff toys and one of them landed on Mikoto? The White Kämpfers also receive it the same way Mikoto did.
** To be specific, in the anime, Mikoto got her Entrails Animal plushie in the ''bouquet'' that Kaede threw into the audience, not just tossing her one.
* ClingyJealousGirl: All of the main girls show this at some point, especially at the end of episode 11 when they all force him to grope them.
** In episode 8, Mikoto gets incredibly jealous when she finds out that Shizuku took Natsuru out on a date, and [[MegaTonPunch beats him up]]. Natsuru attempts to deny this, but Shizuku simply [[FromBadToWorse adds fuel to the fire.]]
** Later on Akane comes to Natsuru's house and also demands to know why he went on a date, and forces him to take her on one as well, which leads to the next episode.
* ClothingDamage: comes with the fanservicy girl-fight action.
* ColourCodedCharacters: For some reason, the Kämpfers are divided into teams by colored bracelets, including red, blue and white. This didn't stop Akane from trying to shoot Natsuru when they first met, even though they were on the same side.
* CombatByChampion: [[spoiler: The whole deal about the Kämpfers.]]
* CreditsRunningSequence
* CreepyDoll: Stuffed animals that can talk and move on their own, called Messengers, are the ones telling the Kämpfers that they have been chosen. Names such as Harakiri Tora and Seppuku Kurousagi don't quite help. It also doesn't help that their ''insides are coming out.'' Just to make that clear, these are stuffed animals designed to look like they have committed Seppuku, meaning stabbed themselves in the stomach and ripped upwards to let their entrails come out. Each one has realistic-looking fake guts hanging out of their stomach. Somehow these are considered cute toys for kids to have. Small wonder that the novels tell us that the company manufacturing those dolls is said to be in a bad state.
* CryCute: Mikoto during episode 8 after finding out Natsuru was on a date Shizuku. She also [[ClingyJealousGirl beats him up for doing so as well.]]
* CurbStompBattle: How else would you describe that [[spoiler: supposedly last battle? To elaborate, due to a ThemeMusicPowerUp and with some upgrades, Akane, Shizuku, and Mikoto defeats the White Kämpfers INCLUDING Kaede.]]
** [[spoiler:In the second season [[note]]really just two episodes[[/note]] Natsuru quickly defeats all four of the white Kämpfers in one shot and then makes a more powerful Kaede, who had already defeated Mikoto, Akane, and Shizuku, retreat. Why he doesn't try fighting earlier is anyone's guess though.]]
* DatingCatwoman: Attempted. Shizuku spends the better part of an episode ignoring [[IdiotHero Natsuru]]'s boorish behavior.
* ADayInTheLimeLight: The four messengers (Harakiri Tora, Seppuku Kurousagi, Kanden Yamaneko, and Chissoku Norainu) get almost all of the ChristmasEpisode combined with FreakyFridayFlip.
* DefeatMeansFriendship: Akane and Shizuku.
* DisproportionateRetribution: During the cultural fest, a few [[DisguisedInDrag male students]] try to sneak into the girl-school department. The female students answer this by breaking out '''[[MoreDakka assault rifles]]''' and open fire on them.
* DoesThisRemindYouOfAnything: The way Akane describes pretty much anything related to being a Kämpfer is full of InnocentInnuendo. [[BlatantLies Then she'll squeal and say she doesn't mean it like that]].
* [[DoggedNiceGuy Dogged Nice Girl]]: Akane, Shizuku and Mikoto to male Natsuru, and Kaede to female Natsuru. See AllLoveIsUnrequited above.
* DontTryThisAtHome: "Good boys should ignore the crazy lady." "Bad boys should ignore the crazy lady too."
* DoubleStandardAbuseFemaleOnMale: Poor Natsuru, regardless of which gender he's in.
* DynamicEntry: Mikoto has one during episode 8. In a possible ShoutOut to LightNovel/HaruhiSuzumiya, Natsuru suffers a kick to the head from her, which also sends him flying.
* EarlyBirdCameo: In episode 5, [[spoiler:four Entrails Animals are thrown to the audience of the play. The unnamed background characters who recieve them reappear several episodes later as named White Kämpfers.]]
* EvenTheGirlsWantHer: Episode 3 ''loves'' this trope; upon female Natsuru's arrival to the girl's side, the collective reaction of her new female classmates is to perform what is essentially a large, simultaneous group-glomp. Following that, the remainder of the episode features nothing but the rest of the school's female population depravedly fawning over her, with a few even going so far as to capture her and tie her up so they so they could play with her as much as they wanted. Natsuru, you lucky son of a bitch.
* EverythingsBetterWithPenguins: Especially a tsundere penguin.
** Especially a Creator/RieKugimiya tsundere penguin.
* EvolvingCredits: Rather crudely done in episode 7 after the official introduction of Mikoto, which just edited some scenes to show her Kämpfer form jumping from the sky. It's not for the sake of preventing spoilers, either, given how the previous opening [[SpoilerOpening goes]]...
* {{Fanservice}}: He-llo LEGS!! The opening and ending themes as well as the eyecatches are nothing but this.
** Double dare you to watch episode 13 and tell us its not THE most fanservicy thing short of Hentai.
* FauxActionGirl: Natsuru and Akane have yet to successfully win a one-on-one battle with anyone. Neither [[ImperialStormtrooperMarksmanshipAcademy can hit worth a damn]], and [[FriendlyEnemy Shizuku]] spends a lot of time bailing them out.
* {{Foreshadowing}}: When Seppuku Kurousagi warned us back in episode 3 that his [[ObliviousToLove denseness is certified to be in the Guiness World Records]], it was not kidding.
** Episode 4 is probably a straighter example. In the {{Eyecatch}}, Kaede's expression is similar to [[spoiler: her evil side.]]
* ForTheEvulz: Natsuru is told that the battles between the blue and red Kämpfer serve as a substitute for war in a far away galaxy, but the only moderator we see relishes being cruel and manipulative.
* FreakyFridayFlip: Episode 12. The four main casts switch bodies with their respective Messengers.
* GainaxEnding: [[spoiler:Episode 12, which is about the main four [[FreakyFriday swapping bodies with their dolls]], ends with the dolls in their owners' bodies flying away on Santa's sled. Then the episode (and perhaps the entire series) turns out to be [[FramingDevice a story told by female Natsuru to her child.]] [[ScrewYourself And male Natsuru is married to female Natsuru.]] After ''that'', the final scene is Sakura on Santa's sled throwing Entrails Animals to the children, four of them being the still bodyswapped main cast.]]
* GenderBender: Read the intro.
* GettingCrapPastTheRadar: For a series like this, its surprising that theres an example of this. Basically, Shizuku and Akane invite themselves to go along with Natsuru (in female form) to Kaede's house. Kaede, being the not so subtle person she is, buys multiple bags of Pocky (otherwise known in-verse as Packy) to play the kissing game. This leads to Shizuku and Akane kissing and what ensues makes it look like Shizuku has ravished Akane, complete with Akane completely sprawled out on the couch, utterly agog at how good Shizuku is. Whoof hot and heavy indeed......
* GoodEyesEvilEyes: [[spoiler: Kaede]] generally has innocent eyes, but when she goes into [[spoiler: ManipulativeBitch mode]], you can clearly tell something's up with her. [[spoiler: Probably one reason why she was able to fool the other main characters for so long.]]
* GratuitousGerman: The title of the show is just the tip of the iceberg. In short, you've got the title, the names of their weapon types (Schwert, Gewehr, Zauber), and the IdiosyncraticEpisodeNaming. The GratuitousGerman is even {{Lampshaded}} within the series thrice to date ("It's German, you retard!", Akane offering to show Natsuru the German dictionary, and once in a next episode preview).
** However, all this remains bearable until episode 11, when the producers decided they wanted the big fight to be accompanied by [[LudwigVanBeethoven classical music]], so you get to hear some Japanese people who've obviously never studied any foreign languages other than English trying to sing "An die Freude". Hint: "Flügel" does ''not'' rhyme with "Google".
** Also, the grammar of the title is a bit off. As all Kämpfer are female, it should be [[http://de.wiktionary.org/wiki/K%C3%A4mpferin Kämpferin]] (singular)/Kämpferinnen (plural). But that doesn’t [[RuleOfCool sound as good]].
** The non-German fanbase who is not able to write the word "Kämpfer" just writes "Kampfer" instead of "Kaempfer". "Kampfer" would be pronounced as "Cum-pfer". The German "Ä" is equal to "Ae".
* GreenRooming: Happens to Mikoto, who's seen via postcards in the first 4 episodes, then she returns home in episode 5, but doesn't see Natsuru until the beginning of episode 6.
* GuiltyPleasure
* HandWave: Played for laughs. In episode 7, all the the main characters spend the night at Kaede's apartment, including the entrail animal messengers. Flashing on-screen text informs us that Kaede doesn't see the clearly visible living toys because she's too infatuated with Kämpfer-Natsuru to notice.
* HaveIMentionedIAmHeterosexualToday?: Both Akane and Shizuku insist this despite all the LesYay that happens in the series.
* HopelessSuitor: Akane feels this way because male Natsuru likes Kaede, and while in female form, Natsuru seems even more popular.
** Mikoto probably plays this trope straight however, since she doesn't really seem to have a chance with him. But that doesn't stop her from trying.
** Male Natsuru towards Kaede. [[spoiler: Even when Kaede finds out (if she didn't already know) about male/female Natsuru, she tries to seduce the male one into doing bad things to his TrueCompanions and changing into his female form permanently so that "he" can enjoy her. It almost works...]]
* HotSpringsEpisode: Natsuru, you [[IdiotHero lucky bastard...]]
* IdiosyncraticEpisodeNaming: Every episode's title begins with a single word of GratuitousGerman.
* IdiotHair: Mikoto
* IgnoredEpiphany: In Episode 9, Natsuru spends 5 seconds considering the white Kämpfer, the moderators and other events... and then gets distracted.
* InvoluntaryShapeshifting: The initial transformation is involuntary and occurs if an enemy Kämpfer is nearby, though it can be voluntary if in the presence of a friendly Kämpfer; the transformation ''back'' starts off involuntary, but a Kämpfer gains control over it as she gets used to it.
* ItAmusedMe: Shizuku forces Natsuru to transfer to [[SchoolgirlLesbians the girl's side of the school]], and then casually spreads the rumor that male Natsuru and female Natsuru are an item. Because tormenting Natsuru is hilarious.
* JustFriends: Natsuru (in male form) and his childhood friend Kaede Sakura, even saying in the manga that he doesn't want to outright ask her out and potentially get shot down so he decides to stay friends with her. However, when he changes into a girl, Natsuru quickly gets a RelationshipUpgrade with her even though she doesn't seem to realize that the two Natsurus are the same person.
* KickTheDog: [[spoiler:Kaede brainwashing Mikoto in episode 13.]]
* LapPillow: [[spoiler: Shizuku gives one to Natsuru after he fall asleep during their date. It is implied that she kissed him again [[DudeShesLikeInAComa during his sleep]].]]
* LightIsNotGood: The White Kämpfer
* LivingToys
* LoveDodecahedron: It's a doozy.[[note]]Mikoto and Akane like male Natsuru, although normal-Akane and ''especially'' Kämpfer-Akane don't act too differently around female Natsuru. Sakura likes female Natsuru, and Shizuku might, but is more likely screwing with Natsuru's head. Natsuru likes Sakura, but everyone else keeps getting in the way. Add that to the fact that everyone thinks that male Natsuru is dating female Natsuru, while Sakura caught Akane and male Natsuru in a compromising (probably innocent) moment. Oh, and most of the school is crushing on female Natsuru. It's only gonna get worse from here.[[/note]]
** Illustrated [[http://mangafox.me/manga/kampfer/v04/c016/8.html here,]] or at least Natsuru's [[ObliviousToLove understanding]] of it.
--> "What the heck? Sakura loves and hates me... And I love myself?"
* LoveMakesYouDumb: Natsuru's [[SatelliteLoveInterest crush on Kaede]].
* LovesMyAlterEgo: See JustFriends. In the anime, it's reached the point where Kaede actually sees the male Natsuru as a rival for her love to the female Natsuru, while still not realizing that the two are the same person.
* LoveTriangle: [[TriangRelations Type 4]], with Natsuru in "a", Sakura in "b" and [[GenderBender Natsuru]] [[TwoPersonLoveTriangle in "c"]]. There's also a [[TriangRelations Type 5]], with "a", "b" and "c" being Akane, Natsuru and Sakura.
* MarionetteMaster: Kaede has a huge collection of stuffed toys, but the ones she gave to the main cast all seem to be turning into sentient Messengers choosing their Kämpfers. Fan- and Shizuku-speculation is that she's either the Moderator, or is [[UnwittingPawn being somehow manipulated by the Moderator]].
** [[spoiler: Confirmed in episode 10. Where it is clear that Kaede is a Moderator, knows everything that is going on and is commanding the White Kämpfer.]]
* MegaTonPunch: Natsuru seems to suffer these, like most other harem anime males.
* MeleeATrois: There are three factions -- red, blue and white -- and [[strike:all of them are likely to be engaged in a three-way battle at any time.]]
** Red and Blue stopped fighting pretty early. So now it's just red/blue versus white.
* MentorMascot: The suicide plushies.
* MindControlEyes: Natsuru has these for the period of being under Kaede's hypnotic suggestion to ravish Shizuku (anime episode 10).
* MoeAnthropomorphism: Several of the eyecatches, when not doing fanservice of the human characters, sometimes present anthropomorphic versions of the animals. They're considerably less creepy when turned into a human girl. Note that this applies to ''all'' of the animals. Even one voiced by Creator/KenjiUtsumi.
* MoodWhiplash: The pre-title sequence of the first anime episode is a decidedly humorless scene featuring Kamper!Natsuru running for her life from Kämpfer!Akane, who seems to be shooting to kill. The scene ends with Kämpfer-Natsuru plunging off the top of a building, seemingly to her death. Cue the [[http://www.youtube.com/watch?v=fGIySDt57rk opening]].
** Episode 9 has [[spoiler:Kaede exchanging glances with girls the audience later finds out are White Kämpfers and, at the end of the ep, mind-controlling Natsuru with frightening easiness]]. Just about everything else in the episode is lighthearted fanservice.
* MoralityChain: Akane's Kämpfer mode is a [[MurderIstheBestSolution blood bath waiting to happen]], with Natsuru having the unenviable position of having to ride herd on her bloodthirsty antics.
* NakedApron: Natsuru and Akane are forced into wearing this (among other costumes) by the female students in episode 5, and Mikoto greets Natsuru with it early in episode 6.
** Mikoto also wears one when she gets a job as a cook at a hostess club in episode 14.
* NoFourthWall: By the way, the staff ate the other parts of the animals afterward. Yeah, this show makes you feel like the staff really wants to break the fourth wall or erasing the fourth wall all together.
** After Akane imagines Natsuru to look exactly like Kamina (from GurrenLagann) near the start of Episode 9, the magazine she was reading is shown to have a center spread of Male Natsuru's facial character sheet (used by animators as reference).
* NotADate: At least, [[IdiotHero Natsuru]] believes so. [[spoiler:[[DefrostingIceQueen Shizuku]]]] insisted otherwise.
* OffModel: [[http://i36.tinypic.com/2qi5kdy.jpg This.]]
** [[http://img704.imageshack.us/img704/7048/kampferquality.jpg This is a better example.]]
** [[http://www.indiana.edu/~germconf/archive/2005/images/Not_To_Be_Reproduced_1937.jpg In some circles this is considered high art.]]
* PaperThinDisguise: So the only way to differentiate yourself from the original person would be to put [[strike:cat]]tiger ears and a tail!?
* ParentalAbandonment: Necessary for narration purpose, none of the characters seems to live with their parents. It gets funny when Natsuru says that if he gets home late, '''Harakiri Tora''' would be worried. Having a foul-mouthed CreepyDoll as a parental substitute? Maybe this is why he's an [[TooDumbToLive idiot]]...
* ThePsychoRangers: The White Kämpfers
* RedOniBlueOni: Akane and Natsuru
** Same goes to the kämpfer colors of red and blue
** Interestingly enough both Akane and Natsuru are on the blue side
* RescueRomance: You have to wonder how many girls Natsuru's gonna get this way. Akane developed a crush on Natsuru after s/he pushed her away from a falling street light, Shizuku began to have interest in him after he [[SaveTheVillain spared her]] , and Sakura became obsessed with Natsuru's Kämpfer form after she saved her from Akane. Twice. Sadly, the inverse is never true, as no matter how many times Akane or Shizuku save Natsuru from his own [[IdiotHero air-headed]] [[TooDumbToLive stupidity]] he never gets the hint.
* RuleSixtyThree: '''Natsuru'''. That is all.
* RunningGag: In the [[FreakyFridayFlip last episode]], everybody that the group runs into immediately says upon seeing Natsuru/Harakiri Tora, "Are you the female Senou Natsuru? Oh wait, you've got a [[PaperThinDisguise different voice, ears and a tail]]. [[TooDumbToLive You must be somebody else.]]" This eventually gets [[LampshadeHanging lampshaded,]] "I don't really mind, but why does everybody have the same reaction?"
* SacredFirstKiss: [[spoiler:Shizuku]] [[ForcefulKiss stole Natsuru's first kiss]]. [[DudeShesLikeInAComa And his second kiss]]. [[ForcefulKiss And his third kiss]]. [[ForcefulKiss And his fourth kiss]]. [[OverlyLongGag And his]] [[ForcefulKiss fifth kiss]]. Six and seven went to [[spoiler:Mikoto]] and [[spoiler:Akane]], respectively.
* SaveTheVillain: Justified, since Natsuru isn't a bloodthirsty psychopath.
* SchoolgirlLesbians: Plenty on the girls' side for Female!Natsuru.
* SelectiveObliviousness: Natsuru. No matter how many times Shizuku tells him that they're on a date, Natsuru is absolutely sure that she's just messing with him and that they're really just trying to lure the white Kämpfer out of hiding. It would seem that Natsuru has a hard time accepting that he's popular with girls, even after Akane [[LampshadeHanging said it straight to his face]].
* SeriousBusiness: Several boys try to break into the girl's side of the high school in the beginning of episode 5. They're promptly stopped by a squad of girls wearing military uniforms and wielding guns to stop them.
* {{Sexophone}}
* {{Shiptease}}: Most of the principle cast is shipteased in some form depending on how active your imagination is-- both with [[{{HaremGenre}} Natsuru]], and with [[LesYay each other]].
* ShoutOut:
** Episode 1: "You may be a Kämpfer, but you're not a Mobile Suit!" - This is a direct reference to the Zeonic [[http://www.mahq.net/mecha/gundam/0080/ms-18e.htm MS-18E Kämpfer]] mobile suit in ''[[Anime/MobileSuitGundam0080WarInThePocket Gundam 0080]]'', and it's coloured blue, just like Natsuru's hair.
** Episode 2 features the line: "So reds really are [[Anime/MobileSuitGundam three times faster?!]]"
** Episode 3: "Lily: The Secret Flower Garden" title image is clearly [[LightNovel/MariaSamaGaMiteru Lillian Academy]]. Among the girls during the "Talk to Senou-san for 500 Yen" event are {{Expy}}s of characters from ''LightNovel/{{Akikan}}'' and ''Anime/HellGirl''. Not to mention [[LightNovel/MariaSamaGaMiteru This]] [[http://img136.imageshack.us/img136/4545/bscap0003h.jpg image.]]
** Episode 4: The line "everyone, [[{{Anime/Macross 7}} listen to]] [[Anime/MacrossFrontier my song]]"
** Episode 5: Shizuku ([[Creator/KaoriNazuka Hey It's Nunnaly's Voice!]]) in [[CodeGeass Zero's get-up]].
** Also in episode 5, this is the description of the MC to Natsuru: She's [[Franchise/SailorMoon the soldier of Uranus]] and [[RevolutionaryGirlUtena revolutionary girl]] who overshadows [[LightNovel/HaruhiSuzumiya Haruhi even when she isn't melancholic.]] Also, [[Anime/MacrossFrontier "Is this two-timing? Are you both my wings"?]]
** Voice actor reference: Creator/YukariTamura, voice of Seppuku Kurousagi, has a radio show titled..."Tamura Yukari's Mischievous Black Bunny (''Kurousagi'' in the original title)".
** In Episode 6, Harakiri Tora tells Natsuru he had a dream about "...becoming a [[Anime/{{Doraemon}} bath-loving girl. And then a guy with glasses and a robot]]--".One of the ghost in the haunted house is [[Anime/GalaxyAngel Nomad]]. Also in the same episode, Mikoto yells out "[[Anime/{{Basquash}} Destroy]]!" during her first fight.
** One cannot forget Natsuru pulling off a {{Matrix}} move.
** The {{Eyecatch}} of episode 7 has Mikoto cosplaying as [[{{Vocaloid}} Miku Hatsune]].
** Episode 8: [[Anime/HellGirl Ippenshindemiru?]] Of course, to drive the point home, MamikoNoto gets to say it.
** Episode 9: Akane mentions that her brother (exact word: aniki) once told her "[[GurrenLagann Believe in the me who believes in myself]]". Natsuru also looks like [[http://i46.tinypic.com/2w2mzw7.jpg Kamina]] during [[ImagineSpot Akane's dream]].
** Episode 12: Kanden Yamaneko [[spoiler: in Shizuku's body]] dresses as [[UruseiYatsura Lum.]] VitaSexualis (another manga) is [[http://www.mangatoshokan.com/series/vitasexualis also referenced.]] Also at one point Creator/YukariTamura has this line: [[MagicalGirlLyricalNanoha "Shut up before I befriend you"]]
** The [[OnTheNext next episode previews]] deserve special mentioning:
*** Episode 02: [[StarWars "Once upon a time, in a galaxy far, far away..."]]; Natsuru as Luke, Harakiri Tora as Obi Wan, and Shizuku as Darth Vader/Emperor Palpatine.
*** Episode 04: Gender-flipped ''Anime/WhisperOfTheHeart''.
*** Episode 05: ''PiratesOfTheCaribbean''; Natsuru as Will Turner, Shizuku as Elizabeth, and Akane as Barbossa.
*** Episode 06: ''WesternAnimation/FindingNemo''; Natsuru as Nemo, Harakiri Tora as Marlin, and Akane as Dory.
*** Episode 07: a skirt-flipping Natsuru [[Franchise/HarryPotter Potter]].
*** Episode 08: ''Film/DieHard''.
*** Episode 10: [[Anime/MobileSuitVictoryGundam Victory Gundam]].
*** Episode 11: Theatre/RomeoAndJuliet. The twist? Both narrated by Creator/KenjiUtsumi and MichikoNomura [[Anime/{{Doraemon}} (original Shizuka)]]. Who are married.
* SkinshipGrope: When Fem-Natsuru goes to the [[PublicBathhouseScene public baths]] in episode 10, most of the female cast cops a feel. At the same time.
* SpitTrailKiss: Natsuru's first kiss with Shizuku.
** And then with [[LesYay Akane and Mikoto]] (although they were [[HaveIMentionedIAmHeterosexualToday only practicing]]).
* SpoilerOpening: The anime gives away plot points and secret identities from the get-go.
* {{Squee}}: The girls like to do this around female Natsuru.
* StealthHiBye: Shizuru seems to be pretty good at this, having mysteriously showed up near Natsuru several times.
* SuperGenderBender: It's apparently a rule that Kämpfers can only be girls, so any boys that are chosen transform into girls when their powers activate.
* ThemeMusicPowerUp: Happens in episode 11 where [[spoiler: Shizuku, Akane, and Mikoto get their upgrade]] to the Messengers singing the Ode to Joy with Kämpfer-y lyrics.
** Actually, those are the proper lyrics, they weren't just changed to suit the show (Except for the subs while it was playing)
** The song returns in the first OVA while they are fighting against the White Kämpfers.
* ThemeTuneCameo: The opening ("Unreal Paradise") plays at the [[KaraokeBox karaoke]] joint in episode 4.
* TookALevelInBadass: While Natsuru is still the dumbass we all know and love, in the first OVA, he does manage to one shot KO all the white Kämpfers at the same time with a fire blast and later saves Mikoto from being shot by Sakura. Give him credit for throwing some amount of weight around.
* TooKinkyToTorture: The evil harem at end of the first season who react enthusiastically from the news that they'll be punished.
* TransformationSequence: Because when you're turning into a girl, the right amount of flashiness is a must. Of course, Shizuku (episode 2) and Akane (episode 8) also have them. Mikoto joins them in episode 11, which cheekily adds orgasmic moans to ''all'' the transfomration seuqences.
** Kinda subverted: the transformation sequences are not used very often (at most a total of 4 times in 10 eps) so they're not annoying.
*** Parodied in KäTAS 1 when Shizuku attacks in the library
--->'''Natsuru''': Wait when did I change? God damn anime couldn't afford to do it twice?
* {{Troperiffic}}: For a [[TwelveEpisodeAnime 12 episode]] fanservice-laden GuiltyPleasure series, there's quite a lot of trope in it.
* {{Tsundere}}: Akane, thanks to her being a Kämpfer. Default personality: [[ShrinkingViolet see above]]. Kämpfer personality: AxCrazy [[SmallGirlBigGun gun-touting]] [[DarkActionGirl warrior]]. Wow.
** The [[spoiler: White]] Kämpfer, Sayaka Nakao seems to have this trait.
** [[spoiler: The bonus episode 13 has an Entrails Animal of a White Kämpfer in full {{Tsundere}} mode and played by none other than Creator/RieKugimiya]]
* UnluckyChildhoodFriend: Mikoto, but she won't give up that easily.
* {{Unperson}}: [[spoiler: This is what happens if a Kämpfer is defeated in battle.]]
* UnusuallyUninterestingSight: In episode 5, Seitetsu Academy gets BLOWN UP by a Rocket Launcher from the girls survival club, has an experiment that went HAYWIRE which caused a (dramatized) ZombieApocalypse and some tentacle rapes and the two bystanders just CHUCKLED that it's the SchoolFestival. Seriously, NO ONE bats an eye at those!?
* UnwantedHarem: At the last count, Akane, Kaede (the only "wanted" part), Mikoto and maybe Shizuku (if she's not just messing with Natsuru's brain).
* VoicesAreMental: In episode 12, when [[spoiler: the main characters swap bodies with their dolls.]]
* WorldOfCardboardSpeech: Shizuku explaining her refusal to fight Akane and Natsuru. Natsuru falls asleep in the middle of it.
** Dunno if it's this trope or not but in episode 11 [[spoiler: Natsuru declaring that he chooses Akane, Shizuku, and Mikoto and to prove it, he transforms back to male.]]
* YouGottaHaveBlueHair: Whether you have it as a normal human or not, you ''will'' have some ridiculous hair color in Kämpfer form. Probably the worst is Shizuku, whose hair has a black over layer and a [[strike:white]] ''[[EverythingsBetterWithSparkles pearly]]'' under layer. Few characters have natural eye colors, either.
* ZettaiRyouiki: Grade A on our hero ([[GenderBender ine]])! Also, the StudentCouncilPresident--and Mikoto, in later episodes.
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