[[quoteright:200:http://static.tvtropes.org/pmwiki/pub/images/nanaka_5584.jpg]]

''Majikaru, Domikaru ! Transform me into an adult !''

Nanaka is a 17-year-old high-school student who's completely obsessed with preparing her college exams, to the point of being looked down upon by her classmates. She's extremely frustrated by her childhood friend Nenji, an immature punk who keeps getting into fights with the local bullies. On a fateful day, Nenji decides he's had enough with Nanaka's nagging, and tells her to sod off.

She doesn't take the news well.

After {{Fainting}} dramatically, she hits her head violently on the pavement and has to be taken to the hospital. There, it appears that she has complete amnesia from age 6 and upwards, ending up with the personality she had when she was 6. There's no telling when she will be back to normal, if ever. Nanaka's father urges Nenji to help her recover, and to protect her in the meantime. Nenji manages to cook up an acceptable explanation to Nanaka : they both "magically" grew up from 6 to 17, which is a game they used to play at that age in imitation of her favorite {{Anime}}, ''Magical Domiko''. But they still have to grow up mentally.

HilarityEnsues when she has to go back to school. Most of her classmates misinterpret her childish behaviour as [[InnocentInnuendo flirtiness]] and hate her even more. Nenji has great trouble trying to prevent her from perpetually humiliating herself. But the most surprising part is that, however tiresome she can sometimes be, the 6-year-old Nanaka is sweet, cheerful, earnest and as a whole much more loveable than her 17-year-old self. One wonders what the heck went wrong with her growing up. Should Nenji really try to [[WeWantOurJerkBack bring her back to normal]] ?

Nanaka 6/17 is a fun light-hearted (if sometimes bittersweet) comedy about [[ComingOfAgeStory growing up]] and how much one should change between childhood and adulthood. There's no [[AnAesop easy answer]] though, and it does not end with a forced HappyEnding.

This story was originally published as a 12-volume {{Manga}} from 2000 to 2003 before being adapted as a [[TwelveEpisodeAnime Thirteen Episode Anime]] in 2003. All thirteen episodes of the English dub are [[http://www.youtube.com/show/nanaka617 available]] on Website/{{Youtube}} and [[http://www.hulu.com/nanaka-617 Hulu]], though the last five episodes are mislabeled[[note]]The video titles and descriptions act as if the BonusEpisode is in its chronological place when it's actually at the end of the series. To view the series in proper chronological order, watch episodes 1-8, then "13" followed by "9-12"[[/note]].

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This show provides examples of:
* AbuseIsOkayWhenItsFemaleOnMale: Poor Arashiyima, and sometimes Nenji.
* AdultsAreUseless: Nanaka's dad is nice, but entirely clueless.
* AllGirlsWantBadBoys: averted for Nenji : Nanaka is fed up by his attitude, and Amemiya only starts being interested in him when the plot has him become gentler. But inverted with Nanaka, who suddenly becomes popular with boys because of her "bold" and "shameless" behaviour.
** Amemiya is an interesting case : she was actually interested in Nenji ever since in her childhood when he defended her from bad kids, but when meeting him again in High School, she was frightened by him as he has become a violent {{Delinquent}}. And then, as said above, her interest kicked back in when he started to mellow out.
* AlphaBitch: Amemiya starts as this before mellowing out; Chie Kazamatsuri later on.
* AnguishedDeclarationOfLove: [[spoiler: Amemiya]] to [[spoiler: Nenji]], [[EmpathicEnvironment under the rain to boot]], in Volume 8, Chapter 64 of the manga ; [[spoiler: and repeated in Volume 10, Chapter 86, again (at least a part of it) under the rain]].
* AnimeHair: Nenji's wild haircut is lampshaded heavily.
* ArmorPiercingSlap: Amemiya gives one to Nenji in episode 8 when she walks in on Nanaka forcefully trying to give him a sponge bath.
* BarehandedBladeBlock: Nenji fails pulling it off in episode 3 due to Nanaka's interference.
* BittersweetEnding
** [[spoiler: Both of Nanaka's [[SplitPersonality Split Personalities]] may have disappeared, but thanks to them she finally became a more complete person, and reached her goal of becoming a fine adult ; Nenji even confirms it in one of their talks. And, after she fell into a coma caused by the disappearance of her 6-year personality, the manga ends when she finally wakes up one month later, called by all the friends she made during her ComingOfAgeStory, who gathered specially for her. Nanaka tells them : "Tadaima" (I'm back), and they heartwarmingly welcome her back with a "Okaeri !" (Welcome back !)]]. Looks more like a CrowningMomentOfHeartwarming and a HappyEnding here.
* BonusEpisode: Takes place between episodes 8 and 9; doubles as a DayInTheLimelight.
* ButtMonkey: Arashiyima to his sister, Nanaka's dad to Nanaka.
* ChekhovsGunman: Yoshida makes minor appearances in episodes 6 and 7 before before his actual introduction in episode 8.
* TheChewToy: Arashiyima. The poor guy gets effortlessly beaten up by Nenji repeatedly, his little sister keeps hitting him with a stick, and more generally he suffers complete humiliation every time he appears on screen.
** Amemiya too, as her repeated attempts at getting Nenji's favours get systematically foiled, and, [[FestivalEpisode in the manga's New Year chapter]], she even get a "Daikyou" ("Worst Luck") mikuji which advises her to give up on [[AllLoveIsUnrequited unrequited love]]. [[spoiler: Subverted in that [[ThrowTheDogABone she scores him in the end, in the manga that is]]]].
* ClingyJealousGirl: Nanaka isn't too fond of Kuriko, especially after she spends too much time with Nenji in episode 5. The feeling is mutual with Kuriko towards Nanaka.
* ColorFailure: After Nanaka has a fight with Nenji, she angrily brushes off her dad's attempt to spend more time with her. It affects him so much that he stays in that same exact position till the end of the episode.
** Happens to Nenji in episode 8 while sick.
* ComingOfAgeStory: Nenji ; also, this is the manga's MythArc regarding Nanaka.
* CranialEruption Arashiyima.
* DayInTheLimelight: The BonusEpisode is centered around a day in the life of Amemiya rather than on Nanaka or Nenji.
* {{Delinquents}}: Nenji and Arashiyama.
* DisappearedDad: Nenji lost his father when he was 8. It's a plot point at least two times in the manga : it's his FreudianExcuse for becoming a violent [[{{Delinquents}} Deliquent]], and it helps him [[spoiler: SpottingTheThread when 17-year Nanaka pulls a BatmanGambit in order to get rid of her 6-year SplitPersonality, as 6-year Nanaka would never have any memories of Nenji's father's funeral]].
* {{Dojikko}}: 6-year-old Nanaka.
* DullEyesOfUnhappiness: 17 year old Nanaka has them on the school trip to Kyoto.
* EightiesHair: Arashiyima's mullet is mocked by Nenji, of all people.
* EpisodeOnAPlane Manga-only, volume 8, chapter 70 : Nanaka goes to USA for a while to take her mind off things, [[spoiler: and the plane she's in get hijacked ; it's at this time that her second SplitPersonality, [[MeaningfulName Hiro]], emerges, and [[CurbStompBattle promptly beats the shit out of the terrorists]]]].
* ExactEavesDropping
* EyesAlwaysShut: Nanaka's dad.
* FailureIsTheOnlyOption: Obviously, Nanaka can't go permanently back to normal before the last episode.
* ForgotTheCall: Nanaka.
* FromBadToWorse: Poor Nenji in episode 8. He catches a cold, and Kuriko, Nanaka, and Amemiya all make it a point to take care of him. HilarityEnsues as the first two girls make a mess of things as they continually try to one up each other, with Amemiya largely being caught in the middle.
* GenkiGirl: Nanaka as a 6 year old.
* GirlPosse: All much worse than the actual AlphaBitch.
* GrowingUpSucks: Nanaka and Amemiya.
* HeirToTheDojo: Arashiyima, who has no fighting skills and couldn't care less, to his sister's distress.
* HopelessSuitor: Amemiya probably feels this way through most of the series. Doesn't help that 17 year old Nanaka rubs it in with Nenji being the "most precious thing to her in the world." in one episode.
* ILetYouWin: Manga-only. [[spoiler: In Satsuki's {{Backstory}}, when she and Nenji were little children, he stole her bokken, gave her a piko-piko hammer, and told her that if she manages to hit him with it, he'll give her back her bokken. She tries many times, and fails ; but, when she tearfully says that the bokken is a treasured birthday present from her brother, and swears to get it back, Nenji lets her hit him, and give it back]].
* ImagineSpot: Amemiya has one of Nenji in episode 8.
* ImportantHaircut: [[spoiler: Satsuki]], near the end of the manga.
* InnocentInnuendo: Nanaka.
* IWillWaitForYou: At the end of the manga, [[InvokedTrope invoked]] by [[spoiler: Amemiya]], who, in [[spoiler: her]] thoughts, ask for [[spoiler: Nanaka to wake up soon from her coma, so that, one day, she could ask her blessings regarding Nenji, who, up until there, stayed at Nanaka's side so he takes cares of her, even though he and Amemiya are now a pair]].
* JerkWithAHeartOfGold: Nenji, though he quickly loses the "jerk" part.
* KabukiSounds: Whenever Satsuki Arashiyima talks, as part of the joke.
* KickTheDog: [[spoiler:17-year old]] Nanaka, most notably in episode 7 when she [[spoiler:walks right past an injured child.]]
* LaserGuidedAmnesia => SplitPersonality: Nanaka's mental condition, which started as the former, and evolved as the latter when the 17-year, aka the original, personality re-emerged ; and in the manga, [[spoiler: she later develops a ''second'' SplitPersonality, Hiro, which is Nanaka's WishFulfillment of the person she wants to be]].
* LastEpisodeNewCharacter: In the anime, Rinko "Orin" Yuudate makes only one short appearance near the very end of the final episode.
* LethalChef: 6 year old Nanaka and Kuriko.
* LightningGlare: Kuriko and Nanaka.
* LoverTugOfWar: Happens to Nenji between Kuriko and Nanaka in episode 5 when they both want Nenji to go with them to the theme park.
** Happens again in episode 8, this time with a sick Nenji in ColorFailure mode.
* LoveTriangle: Turns into a LoveDodecahedron as the series progresses though.
* MagicalGirl: In the ShowWithinAShow ''Magical Domiko''.
* MegaNekko: Nanaka.
* MementoMacGuffin: Nenji's kindergarten badge for Amemiya, which she got in her childhood after Nenji lost it when he defended her from bad kids who picked on her.
* MissingMom: Nanaka's died just before she was 6.
* OlderAlterEgo: ''Magical Domiko'' is one of these series and Nanaka thinks she is subject to the trope (but stuck).
* {{Otaku}}: Yoshida.
* OvernightAgeUp: Subverted. Nanaka believes this is what happened to Nenji, her dad and herself, but she just has amnesia.
* ParentalAbandonment: An important theme of the manga, as the loss of one of their parents is how Nanaka and Nenji ended so screwed up.
* PetTheDog: Amemiya, repeatedly)
* PrecociousCrush: Kuriko for Nenji.
* PromotionToParent: Nenji.
* {{Rerun}}: ''Magical Domiko'' InUniverse.
* TheRival: Chemical Kemiko to Domiko in the ShowWithinAShow.
* RunningGag: Arashiyima constantly getting beat on by his sister, who always says he's wide open to an attack, and then hits him on the head.
* ShowWithinAShow: ''Magical Domiko''.
* SqueakyEyes
* StalkerWithACrush: Arashiyima, played for laughs.
* TakeAThirdOption: When Kuriko and Nanaka force Nenji to take one of them to the Pop'N Land theme park in episode 5, he decides to take both of them, or else he won't go. Both girls reluctantly agree.
* TheReasonYouSuckSpeech: Nenji pretty much lays it out to Nanaka while back in her 17 year old state of mind on the school trip. She responds by giving him repeated slaps.
* TimeCompressionMontage: The ''Magical Domiko'' play.
* TokenMiniMoe: Kuriko.
* TrainingMontage: Nanaka learning to play the piano.
* TraumaInducedAmnesia: The premise of the series.
* VerbalTic: 6-year-old Nanaka -- "A-wa-wa!"
* UnwantedHarem: Nenji's got at least 3 girls who want him, a 6 year old, a 17 year old who thinks she's 6 years old, and regular high school girl who's the sanest of the bunch.
* UnluckyChildhoodFriend: In the manga, [[spoiler: Nanaka]]. See the trope below
* VictoriousChildhoodFriend: In the manga, [[spoiler: Amemiya]] scores Nenji, even though it's implied it'll only be completely set in stone when [[spoiler: Nanaka will wake up from her coma, as both Amemiya and Nenji agreed to put their relationship on hold so that Nenji can fully concentrate on taking care of Nanaka until then]].
* [[WeWantOurJerkBack We Want Our Jerk Back (Don't We?)]]: Nanaka, who at 17 is very much a jerk, unlike 6-year-old Nanaka.
* WhoIsThisGuyAgain: Yoshida falls victim to this.
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