History Characters / BGataHKei

* {{Bokukko}}: She refers to herself with male Japanese pronouns.

* {{Bishonen}}: Much, ''much'' better-looking than the vast majority of the male cast and is seen as extremely handsome in-universe.

* [[spoiler:UnexpectedVirgin]]: When he confesses to Yamada while she's on a date with Kosuda, she turns him down [[spoiler:because she believes that he's not a virgin. To Yamada's and everybody else's surprise, he admits that he is indeed a virgin, mainly because he could have it every day and this turns him off]].

* AnimalMotifs: Yamada is often shown compared with predatorious mammals like wolfs or tigers, showing her thirst for having sex.

* CharacterDevelopment: Yamada starts out thinking that sex is all that matters in life, and only wanting Kosuda as a stepping stone to getting a lot of casual sex partners. She's in too much of a hurry to lose her virginity, and doesn't think about what it means to have an actual relationship. Her first attempts to seduce him are embarrassing because she sends mixed messages, can't be honest with her feelings, and has a totally unrealistic idea of how people actually communicate and get together. [[spoiler:Eventually she ends up falling in love with Kosuda, and can finally confess to it in front of everybody else. Even though TheirFirstTime hurts and lasts all of six seconds, the emotional connection and her perceived gain in femininity make up for that. By the end of the manga, Yamada has a much more mature and realistic view of sex and relationships, but still has her moment of sex-craziness.]]

* ClingyJealousGirl: Yamada is extremely jealous. When she first sees Miyano, she instantly freezes and recognized her as her rival. She goes completely crazy when Kosuda and Miyano watch the stars together in ''Episode 7'' and tries to shoot him with an air gun. The same thing happens, when Kanejou invites Kosuda and he explains what happened.

* ColorFailure: Very often, most notably when she witnesses Miyano telling Kosuda that she will come to his house in ''Episode 2'' or when Takeshita points out that she really likes Kosuda.

* DidntThinkThisThrough: She has the target of 100 sex friends but gets into her quest completely unprepared what obstacles she might face and assumes that everything will work out just as planned. It doesn't...
* EpicFail: Subverted in ''episode 4''. When Yamada tries to kiss Kosuda she hits her head and even says "epic fail" but they end up kissing anyway.

* EveryoneHasStandards: As manipulative and self-centered as Yamada can be, she has an agonizing time formulating her reply to [[spoiler:Kosuda's confession]]: Telling him no would screw her plan, but telling him yes (as Takeshita advises her to) is out of the question, since it would be a lie. And Yamada wouldn't deceive anyone on something as important as that to get into their pants! [[spoiler: Of course, as Takeshita has already realized, it 'wouldn't' be a lie, but Yamada is too oblivious to realize that. In the end, she goes for the {{Tsundere}} type response: "I don't hate you!"]] Also, while she says on two occasions that Kosuda is a loser, she only does this to hide their relationship and when being asked, not because she's evil-meaning.

* FlorenceNightingaleEffect: Yamada attempts this on Kosuda, while he's in the hospital. And then his [[HospitalHottie actual nurse]] flirts with him.

* GoingCommando: She goes without underwear in ''episode 5'' to rise her ero-power and impress Kosuda. As FinaglesLaw is in full effect in this universe, it's a very windy day and her action backfires in a spectacular way.

* GroinAttack: Yamada against Kosuda [[spoiler:after get gets an erection while she's hiding under the hospital bed sheets]].
* HaremSeeker: Yamada wants hundreds if not thousand sex friends [[spoiler:originally, until she gives up her desire near manga's end]].

** She says about Kosuda that it cute how easy virgins can be manipulated. Takeshita doesn't take long to point out that she's a virgin herself.

* LastNameBasis: Yamada is called by everybody, except her family, by her last named. And she calls everyone, except her family, by their last names. Her first name is never revealed.

* MakingLoveInAllTheWrongPlaces: She fantasizes about doing it with Kosuda in a cable car, a Ferris wheel and even more. Also invoked when she tries to seduce Kosuda in the dark room of Kosuda's photography club.

** She delivers one in ''episode 6'' that doubles up with a title drop. You absolutely can't argue with her on this.

* NotADate: In ''episode 10'' she's dating Kosuda but they both claim otherwise when Misato shows up.

* SexIsGood: She genuinely believes that having sex is a morally good act but can't handle her urge quite well. She also gives Kanejou Kyouka a lecture about how much sex rises the value and femininity of a woman.
* SexySantaDress: She briefly poses in one in ''episode 4''.

* ASimplePlan: Yamada's plan of having 100 sex friends has some crippling flaws that should be obvious: She never had a boyfriend, has zero sexual experience and does not understand how to seduce Kosuda. Of course, [[spoiler:she has to drop her plan by the end and confess her love to him]].

* StatOVision: Yamada evaluating love hotels in ''episode 4''. It comes with a RoboCam and gauges for "mood", "prize" and "cleanliness".

* TitleDrop: Yamada makes remarks during a ImagineSpot in ''episode 5'' about how the show so far had been a "B-type generic love comedy".

* VirginShaming: She does this to Kosuda in the beginning, although being a virgin herself. As she is isn't evil-meaning towards him, this is more PlayedForLaughs.
* WardrobeMalfunction: Yamada spends the entire second half of ''episode 5'' deliberately not wearing panties to make Kosuda melt. The problem is that it's a very windy day and she has problems to keep her wardrobe together. A sharp air draft finally makes all visible to Kosuda. When Takeshita learns about this she's completely freaked out, but Yamada still justifies her action.

* ChristmasCake: She is about 25 but still single. She once had a boyfriend, but the relationship failed after [[spoiler:he couldn't get an erection when they wanted to have sex, so she is still a virgin]].

* ChristmasCake: She's 27 and still single, but other than Akai, she doesn't mind in the slightest.

* ADateWithRosiePalms: Frequently in the manga (usually she calls it "doing H-stuff alone") which leads to a RunningGag that has the [[{{Yonkoma}} fourth panel]] featuring both her and Kosuda retreating to this simultaneously. This is mostly left ambiguous in the anime.

* ADateWithRosiePalms: Whenever Yamada comes closer to him, he retreats to this afterwards, usually with a lot of tissue boxes besides him. He mentions (to himself) he's "used" Miyano for this on occasion, as well.

* BuxomIsBetter: One of Takeshita's purposes in the plot sometimes seems to deconstruct this. See DCupDistress below.

* BathKick: She does one in the very beginning of the series to show how beautiful she is, but her bad body image brings her down fast.

* [[NiceGuy Nice Girl]]: She is very nice and polite to everyone.

* [[ThoseTwoGuys Those Two Girls]]: She and Misato mostly appear together but are not as plot-critical as the main characters.

* [[spoiler:TheAlcoholic:]] In the manga, when Yamada first comes to her house, we learn that she [[spoiler:drinks a lot to drown her sorrows over being alone.]] Doubles up with [[spoiler:LadyDrunk]] and [[spoiler:DrowningMySorrows]].

* [[ChickMagnet Dude Magnet]]: Almost every boy who sees her instantly seems to fall in love with her. Yamada is filled with envy but she Chika can't give her any advice.

* [[NiceGuy Nice Girl]]: She is very beautiful, polite and a good friend to everybody. If she didn't have occasional moments of sadness and confusion she would be a PerpetualSmiler.

* [[MrExposition Ms Exposition]]: She explains a lot of the plot to the audience in the first episodes of the anime.

* BikerBabe: She wears a biker outfit very often, when she's outside.

* PantyShot: Provided several times throughout the series by Yamada, including a chalkboard-drawn version seen about 35 seconds into the ''opening of each episode.''

[[/folder]]

* {{Meganekko}}: She wears glasses and is BlindWithoutEm.

* YouGottaHaveBlueHair: She has magenta hair.

* YouGottaHaveBlueHair: He has magenta hair, just like his sister.

* LoserDeity: He's not only the guardian of one of the greatest losers imaginable, he fits the loser archetype quire well himself. He is completely useless and never gives out any useful advice, with his incompetence showing everywhere. He fails to be seen at one point and usually only wastes Kosuda's time, who has to figure out everything for himself. Kosuda even complains about this in the manga.

Kosuda's god of sex (Kosuda no ero-gami) wears a bathrobe and is very lazy and unhelpful, and mostly just appears when Kosuda gets an erection and crackles a laugh.

* TheGodsMustBeLazy: He is completely useless and never gives out any useful advice. He fails to be seen at one point and usually only wastes Kosuda's time, who has to figure out everything for himself. Kosuda even complains about this once in the manga. However, Kosuda's sex god still seems to be benevolent.

* LoserDeity: He's not only the guardian of one of the greatest losers imaginable, he's quite much a loser himself, with his incompetence showing everywhere.

* SpeedSex: When Yamada and Kosuda finally [[spoiler:have their first time, it only lasts for a few seconds before he ejaculates and it’s over. In this case it was a merciful outcome for Yamada, for whom the first time was so painful that she couldn’t have endured it for very long. The second time they have sex lasts longer, but not by much.]]

* WhyCouldntYouBeDifferent: [[ImpliedTrope Implied]]. Although never said on screen, she seems to be very disappointed with what her son has always been.