History Manga / KanojoNiNaruHi

*** It isn't until years later while contemplating motherhood that Mamiya finally realizes emergence wouldn't have evolved in the first place if it weren't an effective reproduction strategy, which means some degree of acceptance is probably inevitable for most people.

* MissingMom: Mamiya has severe abandonment issues because his mother abandoned Mamiya and his father only to turn right around and start a new family with another man.

** Mamiya shows off a skimpy bikini in the BeachEpisode, Justified in-story as an indication of Mamiya's desperation to show that she's still the calm, cool, always-in-control Mamiya despite her change and hidden illness, something she only admits indirectly several chapters and many years later when she confesses to Miyoshi that she refused to change or bathe with the other girls during that trip.
** Mamiya wears a NakedApron in Chapter 14. Justified in-story as an attempt by the hypercompetitve Mamiya to fluster Miyoshi for a change so she can regain the upper hand in their relationship. Her a ambivalence is lampshaded by the fact that she retains her underwear (though she makes sure Miyoshi can't see that.)

* AbusiveParents: There's a reason Sagara lives with his uncle. It isn't pretty. [[spoiler: His mother later tries to sell him into the sex trade or for medical experiments, it's not clear which and she doesn't particularly care.]]

* ConvenientlyAnOrphan: Sagara's lack of parental guidance is certainly convenient for the author, if not for him.
** Sagara turns out not to be an orphan in Chapter 14: His parents lost custody for some fairly ugly reasons.
* DifferentForGirls: Even though Sagara is hiding his GenderBender he still has to deal with his physical changes, mainly (aside from the obvious) decreased strength and increased flexibility.

* KnightTemplarBigSister: Nao. Played for laughs when she harasses Narumi, telling him he isn't good enough for Miki only to switch instantly to isn't she good enough? when he demurs. Turns up again in her BigDamnHeroes moment rescuing Sagara

* ParentalAbandonment: [[spoiler: Sagara's father is a ne'er do well gambler with a habit of running out on his debts, his mother is TheResenter, who hates him for being an ever-present reminder of his loser father... and for looking better than she does.]]

* RememberTheNewGuy: Miki doesn't show up as a named character until Chapter 3, though she is depicted as an extra in Chapter One (as the girl who accidentally squirts Sagara with the hose.)
* ReplacementGoldfish: Kurokawa is a semi-voluntary replacement goldfish for her older sister (also named Aya), who her parents prefered. She goes along with it because of the guilt she feels over her sister's death.

* SecondLawOfGenderBending: Averted. Sagara does not deny the physical change but is not willing to re-identify as a girl.

* TheMindIsThePlaythingOfTheBody: subverted: gender identity and presentation appear subject more to social pressures than biology. There is no indication that either Sagara or Kurokawa's sexuality was affected by their transformations and their choices of gender identity and presentation appear to be due more to timing and social circumstances. Kurokawa emerged in elementary school and promptly became a ReplacementGoldfish for her beloved dead sister, whereas Sagara was already compensating for his girly appearance and has no one at home pressuring him one way or the other.
* TheyReallyDoLoveEachOther: Sagara's uncle Haruyuki initially seems aloof but later events prove he genuinely cares and is actually paying close attention while not interfering.

* SecretKeeper: Narumi and Kurokawa both agree to keep Sagara's secret, each for their own reasons. Shima learns Sagara and Kurokawa's secrets, but has kept quiet so far. Miki could easily learn everyone's secrets if she compared notes with her sister. Sagara believes Miki is a SecretSecretKeeper because she is Nao's sister, though Miki herself has given no indication that she knows or cares about any of this, and Nao later assures Sagara that she's bound by professional duty to keep his situation confidential.
* ThereAreNoTherapists: subverted. The protagonist of ''Kanojo ni Naru Hi'' is the protagonist's caseworker in ''Kanojo ni Naru Hi Another''

* TransgenderFetishization: Acknowleged in-story: Emerged children and teens are especially at risk for being kidnapped by human traffickers.

* BestHerToBedHer: Played with and gender-flipped: Mamiya is so competitive she likes to keep Miyoshi "on the back foot" in order to maintain control of their relationship. Miyoshi gets the victory he's always desired every time he flusters her.

*** It isn't until years later while contemplating motherhood that Mamiya finally admits emergence wouldn't have evolved in the first place if it weren't an effective reproduction strategy, which means some degree of acceptance is probably inevitable.
** ThirdLawOfGenderBending: Mamiya's so determined to tackle femininity head on she practically demands to be treated according to the third law during her reintroduction to the class. Miyoshi figures it's just another sign of her need to always master her emotions, though later chapters imply her close relationship with her baby sister may play into it as well.

* ShamelessFanserviceGirl: Mamiya in her first bikini. Miyoshi figures she's overcompensating, which Mamiya finally admits years later on their honeymoon

** Mamiya shows off a skimpy bikini in the BeachEpisode, Justified in-story as an indication of Mamiya's desperation to show that she's still the calm, cool, always-in-control Mamiya despite her change and hidden illness, something she only admits many years and several chapters later.
** Mamiya wears a NakedApron in Chapter 14. Justified in-story as an attempt by the hypercompetitve Mamiya to fluster Miyoshi for a change so she can regain the upper hand in their relationship. Her a ambivalence is lampshaded by the fact that she retains her underwear (albeit where Miyoshi can't see it.)
* VictoriousChildhoodFriend: Mamiya, eventually

* CoolBigSis: Nao and Miki are still extremely close and she spoils Miki unmercifully. Miki's friends even comment on Nao's "Big Sister Complex"

* RescueRomance: Kurokawa is thrilled to discover that Sagara is now female because he saved her from bullies back in elementary school.

* SpoiledSweet: Miki could be used as the page image for this trope
* StepfordSmiler: Kurokawa hides a seething mass of guilt and self-loathing under her quiet, kind exterior and her secret joy that Sagara has emerged is just one more thing to feel guilty about. She even tells Shima "The real me is ugly" after he learns her secret.

** Initially subverted with Sagara, which actually causes more problems for him than playing it straight: the boys' uniforms don't fit right, cause him to overheat, and attract attention of the "it's hot, why are you still wearing your jacket?" variety that he'd prefer to avoid. Kurokawa's attempt to introduce him to feminine clothing caused his first major post-emergence freakout; His only concession on the clothing front is a high-compression sports bra for comfort and concealment. However, he does reconsider this attitude when he notices the way his girls' uniform affects Narumi, even though he tells himself it's because skirts are cooler in hot weather.

** Mamiya wears a NakedApron in Chapter 14. Justified in-story as an attempt by the hypercompetitve Mamiya to fluster Miyoshi for a change so she can regain the upper hand in their relationship. Her a ambivalence is lampshaded by the fact that she retains her underwear.

** PLayed more subtly with Sagara, which actually causes more problems for him than playing it straight: the boys' uniforms fit him poorly and the concealing layers cause him to overheat. His only concession on the clothing front is a high-compression sports bra for comfort and concealment. Kurokawa's attempt to introduce him to girly clothing caused his first major post-emergence freakout. However, he does reconsider this attitude when he notices the way his girls' uniform affects Narumi, even though he tells himself it's because skirts are cooler in hot weather.

** Initially subverted with Sagara, which actually causes more problems for him than playing it straight: the boys' uniforms fit him poorly and he can't remove his jacket or sweatshirt no matter how hot he gets. His only concession on the clothing front is a high-compression sports bra for comfort and concealment. Kurokawa's attempt to introduce him to girl's clothing caused his first major post-emergence freakout. However, he later reconsiders this attitude because of the way his girls' uniform affects Narumi, though he tells himself it's because skirts are cooler in hot weather.

* SecretKeeper: Narumi and Kurokawa both agree to keep Sagara's secret, each for their own reasons. Shima learns Sagara and Kurokawa's secrets, but has kept quiet so far. Miki could easily learn everyone's secrets if she compared notes with her sister. Sagara believes Miki is a SecretSecretKeeper because she is Nao's sister, though Miki herself has given no indication that she knows or cares about any of this.

* ThirdLawOfGenderBending: subverted, which actually causes more problems for Sagara than playing it straight: the boys' uniforms fit him poorly and he can't remove his jacket or sweatsuit top no matter how hot he gets. His only concession on the clothing front is a high-compression sports bra for comfort and concealment. Kurokawa's attempt to introduce him to girl's clothing caused his first major freakout.

* ParentalAbandonment: [[spoiler: Sagara's father is a ne'er do well gambler with a habit of running out on his debts, his mother is TheResenter,

* AdultsAreUseless: subverted. All of Sagara's teachers and caseworkers are fully in the loop and appear genuinely interested in his welfare. They identify opportunities for him to re-identify as a girl but they respect his choices.

* PoorCommunicationKills: Sagara finally wears e girls' uniform (for disguise purposes only, he still isn't sure about re-identifying) then gets very upset when it appears to bother Narumi. Turns out Narumi is actually gobsmacked by her cuteness but fears admitting that would upset Sagara. They do work it out eventually

* ReplacementGoldfish: Kurokawa is a voluntary replacement goldfish for her older sister Aya, because of the guilt she feels over her sister's death.

* TriangRelations: Sagara thought he and Narumi were straight-up rivals for Kurokawa's affections only to learn he's actually the apex of their love triangle thanks to the revelations prompted by his emergence. Narumi thinks he's jealous of Sagara's attentions to Kurokawa, when he's actually jealous of Kurokawa's attentions to Sagara.

* ChekhovsSkill: Miyoshi's family runs a dojo and both Miyoshi and Mamiya earned black belts, though the payoff doesn't come until their BigDamnHeros moment in the sequel.

** ThirdLawOfGenderBending: Mamiya's so determined to tackle femininity head on she practically demands to be treated according to the third law during her reintroduction to the class.

* TheGadfly: Shima needles Sagara and Kurokawa relentlessly until he discovers their secrets... then appears taken aback by what her learns, especially from Kurokawa, and doesn't do anything with the information.

* IfItsYouItsOK: It's not clear if Kurokawa would be willing to accept a lover who is only physically female. Though she does appear willing to give it a try, she also tries to get Sagara to wear girl's clothing. The jury's still out on Narumi with respect to Sagara, but Sagara appears to be willing to apply this to Narumi.

* ParentalAbandonment: [[spoiler: Sagara's father is a ne'er do well gambler with a habit of running out on his debts, his mother is TheResenter

Miyoshi is always competing and losing against his childhood friend, Mamiya, who is good at everything and completely unable to resist a challenge. But their more-or-less friendly rivalry is broken when Mamiya is hospitalized and turns into a girl. In Mihoshi and Mamiya's world, the ratio between the sexes is maintained by a process called "emergence": when there aren't enough women, some boys [[{{Metamorphosis}} transform into girls]]. While emergence isn't exactly uncommon (tens to hundreds of cases every year) it usually happens in young children who are rapidly developing anyway, otherwise the resulting stresses on the body are very dangerous to teenagers and invariably fatal for adults.

Refusing to mope Mamiya breezily returns to school unequivocally and seemingly unabashedly female, determined to seize life as a girl and equally determined to help Miyoshi overcome his severe gynophobia. But Miyoshi soon comes to suspect that there's actually a great deal of turmoil going on beneath Mamiya's seemingly sanquine surface.

Kanojo ni Naru Hi (The day he became a girl) is a Manga series by Ogura Akane

** SecondLawOFGenderBending: Played with Mamiya seems to throw herself into femininity the same way she's attacked every other challenge, but Miyoshi soon realizes she's masking deeper psychological issues.

* OnlyOneAllowedToDefeatYou: The basis of Miyoshi and Mamiya's relationship, which later morphs into a Gender-flipped BestHerToBedHer when Mamiya decides to engage on the romantic front.
* SecondLawOfGenderBending: Contemplating motherhood forces Mamiya to admit emergence wouldn't have evolved in the first place if it weren't an effective reproductive strategy, meaning some degree of acceptance is probably inevitable.

* AloofBigBrother: Subverted. Mamiya's love for her little half-sister Miki is unequivocal and freely given and returned.

* AdultsAreUseless: subverted. All of Sagara's teachers and caseworkers are fully in the loop and appear genuinely interested in his welfare.

* FantasticRacism: It turns out there can be a good deal of prejudice against the emerged.
* TheGadfly: Shima needles Sagara and Kurokawa relentlessly until he discovers their secrets... then appears taken aback by what her learns, especially from Kurokawa.

* KnightTemplarBigSister: Nao. Played for laughs when she harasses Narumi.

* ShamelessFanserviceGirl: Mamiya in her first bikini. Miyoshi figures she's overcompensating.

* IfItsYouItsOK: It's not clear if Kurokawa would be willing to accept a lover who is only physically female. Though she does appear willing to give it a try, she also tries to get Sagara to wear girl's clothing. The jury's still out on Narumi.

** FirstLawOfGenderBending: Emergence is implied to be always male to female. Reversions to male are possible with medical intervention but very rare, as it is implied to be a "last step short of death" medical treatment

Miyoshi is always competing and losing against his childhood friend, Mamiya, who is good at everything and completely unable to resist a challenge. But their more-or-less friendly rivalry is broken when Mamiya is hospitalized and turns into a girl. In Mihoshi and Mamiya's world, the ratio between the sexes is maintained by a process called "emergence": when there aren't enough women, some boys [[{{Metamorphosis}} transform into girls]]. While emergence isn't exactly uncommon (tens to hundreds of cases every year) it usually only happens in young children whose bodies are rapidly developing anyway, otherwise the resulting stresses are very dangerous to teenagers and invariably fatal for adults.

* AloofBigBrother: Subverted. Mamiya's love for her baby half-sister is unequivocal and freely given and returned.

* CoolBigSis: Mamiya Miki practically worships her big sister Nao.

** FirstLawOfGenderBending: Emergence is always male to female. Reversions to male are not unheard of but very rare.

* AccidentalTruth: Narumi blurting out "I didn't expect you to be this cute" marks the first turning point in their relationship

* HeroOfAnotherStory: Mamiya Nao's little sister Miki is a classmate, and Narumi's lifelong friend. Nao herself is one of Sagara's Ministry of Health caseworkers.

* SchoolgirlLesbians: Kurokawa, and she's willing to pursue a relationship with Sagara now that he's physically female.

* SecretKeeper: Narumi and Kurokawa both agree to keep Sagara's secret, each for their own reasons. Shima learns Sagara and Kurokawa's secrets, but has kept quiet so far. Miki could easily learn everyone's secrets if she compared notes with her sister. Sagara assumes Miki is a SecretSecretKeeper because she is Nao's sister, though Miki herself has given no indication that she knows or cares about any of this.

** Narumi needled Sagara into trying on girl's clothing in a classic example of reverse psychology.

* IfItsYouItsOK: It's not clear if Kurokawa would be willing to accept a lover who is only physically female, though she does appear to be willing to give it a try. The jury's still out on Narumi.

* TheNickNamer: Miki. Kurokawa is "Ayaya" and Sagara is "Rinrin". Ironically she doesn't have a nickname for her oldest friend, Narumi, though she is on a first name basis with him.

* RememberTheNewGuy: Miki doesn't show up as a named character until Chapter 10, though she is depicted as an extra in Chapter One (as the girl who accidentally squirts Sagara with the hose.)

* SecretKeeper: Narumi and Kurokawa both agree to keep Sagara's secret, each for their own reasons. Shima learns Sagara and Kurokawa's secrets, but has kept quiet so far. Miki could easily learn everyone's secrets if she compared notes with her sister. Sagara even assumes Miki is a SecretSecretKeeper because she is Nao's sister, though Miki herself has given no indication that she knows or cares about any of this.

* ThirdLawOfGenderBending: subverted, which actually causes more problems for Sagara than playing it straight: the boy's uniforms fit him poorly and he can't remove his jacket or his sweatsuit top no matter how hot he gets.

* SecretKeeper: Narumi and Kurokawa both agree to keep Sagara's secret, each for their own reasons. Shima learns Sagara and Kurokawa's secrets, but has kept quiet so far. Miki could easily learn everyone's secrets if she compared notes with her sister, and Sagara assumes Miki is a SecretSecretKeeper because she is Nao's sister, though Miki herself has given no indication that she knows or cares about any of this.

* TheMindIsThePlaythingOfTheBody: subverted: gender identity and presentation appear subject more to social pressures than biology. There is no indication that either Sagara or Kurokawa's sexuality was affected by their transformations and their choices of gender identity and presentation appear to be due more to timing and social circumstances. Kurokawa emerged in elementary school and promptly became a ReplacementGoldfish for her beloved dead sister, whereas Sagara was already compensating for his girly appearance.

* SadisticChoice: Poor Sagara. A relationship with Narumi might force him to publicly re-identify as a girl, but a relationship with Kurokawa would also require him to be a girl, at least in private, even if she is willing to accept him identifying as a boy in public. Either course requires surrendering his male identity. Kurokawa recognises his dilemma.

* BecauseYouWereNiceToMe: A recursive example: Sagara is grateful for Kurokawa's kindness, unaware that she's repaying him for the kindness he showed her in grade school.

* BabiesEverAfter: the sequel reveals that Mamiya and Miyoshi eventually did get married and Mamiya, despite her fears, is a happy young mother.

* HeroOfAnotherStory: Mamiya Nao's little sister Miki is a classmate, and Narumi's lifelong friend. Nao herself is Sagara's therapist.

* StepfordSmiler: Kurokawa hides a seething mass of guilt and self loathing under her calm, cool, kind exterior and her secret joy that Sagara has emerged is just one more thing to feel guilty about. She even tells Shima "The real me is ugly" after she tells him her secret.
* TheMindIsThePlaythingOfTheBody: subverted: gender identity and presentation appear subject more to social pressures than biology. There is no indication that either Sagara or Kurokawa's sexuality was affected by their transformations and their choices of gender identity and presentation appear to be due more to timing and social circumstances. Kurokawa emerged in elementary school and was promptly turned into a ReplacementGoldfish for her dead sister by her parents, whereas Sagara was already compensating for his girly appearance.
* SadisticChoice: Poor Sagara. A relationship with Narumi might force him to publicly re-identify as a girl, but a relationship with Kurokawa would require him to be a girl in private even if he remained a boy in public. Either course requires surrendering some aspect of his identity. Kurokawa recognises the dilemma, even if Sagara does not.
* SecretKeeper: Narumi and Kurokawa both agree to keep Sagara's secret, each for their own reasons.
* ThereAreNoTherapists: subverted. The protagonist of ''Kanojo ni Naru Hi'' is the protagonist's therapist in ''Kanojo ni Naru Hi Another''

* TriangRelations: Sagara thought he and Narumi were straight-up rivals for Kurokawa's affections only to learn he's actually the apex of their love triangle thanks to the revelations prompted by his emergence.