History Manga / KanojoNiNaruHi

* IncompatibleOrientation: After Sagara emerges Kurokawa reveals that neither he nor Narumi ever really had a chance wooing her because she's a lesbian.

* TheNicknamer: Miki. Kurokawa is "Ayaya" and Sagara is "Rinrin". Ironically she doesn't use her nickname for her oldest friend Narumi ("Yu Yu"} all that often, though she is on a first name basis with him.

''Kanojo ni Naru Hi'' (The Day He Became A Girl) is a Manga series by Ogura Akane.

* TransgenderFetishization:
** Mamiya shows off a skimpy bikini in the BeachEpisode, Justified in-story as an indication of Mamiya's desire to show that she's still the calm, cool, always-in-control person she was before despite her GenderBender 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 ambivalence is lampshaded by the fact that she retains her underwear (though she makes sure Miyoshi can't see that.)

* TransgenderFetishization: A common problem InUniverse: Emerged children and teens are especially at risk for being kidnapped by human traffickers. [[spoiler: Sagara's own mother tries to sell him to traffickers to clear her debts.]]

* ItsAllAboutMe: Sagara's mother's attitude in a nutshell. [[spoiler: Not only does she blithely try to sell him to clear her debts, she actually expects him to go along with it for the sake of his dear old mom, and actually has the gall to ask him if her was going to abandon her when her plans fall through.]]

* PoorCommunicationKills: Sagara finally wears a girls' uniform (strictly for disguise purposes, he still isn't sure about re-identifying, but has to pretend long enough to take the swim test) then gets very upset when it appears not
to bother Narumi. Turns out Narumi is actually gobsmacked by Sagara's cuteness but fears admitting that would alienate Sagara. They do work it out eventually

* IllGirl: Mamiya's emergence stressed her body a lot more than she lets on, and her health is a lot more fragile than she would have people believe.

* PoorCommunicationKills: Sagara finally wears a girls' uniform (strictly for disguise purposes, he still isn't sure about re-identifying, but has to pretend long enough to take the swim test) then gets very upset when it appears to bother Narumi. Turns out Narumi is actually gobsmacked by Sagara's cuteness but fears admitting that would alienate Sagara. They do work it out eventually

** 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 and dresses are cooler in hot weather. Even then the trope is not played completely straight because Sagara is more interested in attracting Narumi than looking girly.

* 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 even if she were willing to accept him pretending to be a boy in public. Either course requires surrendering his male identity. He even discusses this with Kurokawa, who recognises his dilemma.

* SchoolgirlLesbians: Kurokawa, and she's willing to pursue a relationship with Sagara now that he's physically female. Sagara is flattered by the attention but also flustered because she wants him to also be a girl.

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 happy-go-lucky surface.

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

* NotSoDifferent: Mamiya claims she doesn't understand why women put such stock in romance... even though she's thrilled every time Miyoshi makes a genuine romantic gesture.

* NotSoDifferent: Sagara and Kurokawa on multiple levels. Both are emerged girls hiding important secrets.

* BigDamnHeroes: Nao and Kyousuke confronting the human traffickers after Sagara

* HideYourLesbians: You'd think a society where some children spontaneously change sex would be more open minded about gender and sexuality but Sagara has to choose between maintaining a male identity and pursuing a relationship with Narumi. It's not the sole motivation for his choice but it is the straw that breaks the camel's back. Sagara even hangs a lampshade on it, wishing he could walk hand in hand with Narumi and wondering why they can't.

** Narumi actually subverts this trope (at least at first) because he's afraid openly expressing his attraction to Sagara in female clothing would alienate Sagara. It takes him a while to understand that Sagara actually wants to be considered attractive (or at least normal) to him not matter how he is dressed.

* 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.

[[/folder]]

* JumpingTheGenderBarrier: The ultimate reason Sagara eventually comes out to his classmates: he simply cannot abide hiding his affection for Narumi any longer or the rumors his affection raises about Narumi's sexual orientation.

* SecondLawOfGenderBending: Played with. Sagara does not deny the physical change but is not willing to re-identify as a girl, though Nao counsels him that emergence's basis as a reproductive strategy means his sexual orientation is likely to swing towards men even as she acknowledges Kurokawa's lesbianism with "everyone is different."
** Ultimately played straight, though in a more nuanced fashion than most examples: Sagara still misses being a boy sometimes but is ultimately thankful for her change because it kicked her out of a self-destructive rut and taught her important life lessons about love, friendship and caring for others. Rinichi Sagara was lonely, angry and bitter, Rin Sagara is loved and loves in return.

!!Tropes found in Both Kanojo ni Naru Hi and Kanojo ni Naru Hi Another:

!!Tropes found in Kanojo ni Naru Hi:

* WickedStepmother: Subverted. Mamiya's stepmother loves and supports her and is loved in return.

!!Tropes found in ''Kanojo ni Naru Hi Another'':

* TheUnfavorite: Kurokawa. Her parents tried to turn her into her deceased older sister after she emerged, even giving her the same name. She went along with it because she also believed her sister was a much better person and became a StepfordSmiler to hide her self-loathing.