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

''Yami to Boushi to Hon no Tabibito'' (Yami, the Hat, and the Book Travellers), a.k.a. ''Yamibou''

The Great Library: [[MagicalLibrary A place where every world is maintained within books]]. By and large, people can live out their entire lives without ever knowing it exists.

Azuma Hazuki was living out her life as a fairly OrdinaryHighSchoolStudent in one of these worlds, until her adopted sister, Hatsumi, disappeared at midnight on her [[DangerousSixteenthBirthday sixteenth birthday]]. Intruding immediately on her shock was a bird-like being called Ken-chan, which had been sent by its master to find someone called Eve...

''Yamibou'' is, simply, the story of the people whose lives were touched by Eve as she travelled through the worlds contained in the books of the Great Library, and their continued attempts to find her. From Lilith, the current guardian of the Great Library and caretaker of its books (that's supposed to be Eve's job); to Gargantua, whose life was forever altered when he witnessed Eve's apparently magical powers during her stay in his world; and finally to Hazuki, who loves her adopted sister and sought to find her at any cost; each had their own reasons to search.

Many have called ''Yamibou'' a watershed moment for serious {{Schoolgirl Lesbian|s}} moments in anime (though it's been played as comedy since at least 1999 in ''Angel/SteelAngelKurumi'', and probably earlier), the recent rise of ''yuri'' in anime can easily trace its beginning to the late-2003 run of this show. Humorously enough, many of the people who watched the show for just that reason, and who had glowingly referred to it as the defining ''shoujo-ai'' series, absolutely despised the ending. (Several have since attempted to pass the mantle of "defining ''yuri'' series" to ''Manga/KannazukiNoMiko''.)

''Yamibou'' is based on an [[DatingSim "H"-game]] by Root with artwork done by Carnelian. The original game's plot is vastly different, lacking much of the ''yuri'' due to starring a nameless male main character (who was completely eliminated from the anime.)

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!!This show provides examples of:

* AirplaneOfLove: Hazuki watches a plane in the last episode as she reflects on [[spoiler:the child she has a feeling she will give birth to, suggesting there's a new love interest to come.]]
* AllJustADream: Hazuki and Hatsumi share a very passionate scene, only to have it turn out to be nothing more than a dream--in the new world at least.
* AloofDarkHairedGirl: Hazuki has long dark blue hair and shows very little emotion to everyone but Hatsumi.
* AlternateContinuity: The series itself, compared to the game by Carnelian.
* AlternateSelf: Tamamo no Mae reveals that Youko Meirin is her alternate self in episode 11.
* AmazonBrigade: The Oborokamenshuu, female ninjas, from the medieval Japan world. Their boss is a big, masked man.
* AnachronicOrder: The first episode is broken into two parts, depicting the very start of Hazuki's quest and a later adventure within it.
* AncientKeeper
* AsskickingEqualsAuthority: Hazuki becomes the new God of the stone age world because she fights and reduces the first one to a pathetic bat-like form.
* BaitAndSwitchLesbians: [[spoiler:Hazuki never gets her girl, but will ''give birth to her'' as a daughter sometime in the future.]]
* BecauseDestinySaysSo: Eve's continued disappearances--though this may not be "destiny" so much as a basic part of Eve's character, which makes it all the more infuriating.
* BitchInSheepsClothing: For how much Hazuki puts her in a pedestal, Eve turns out to be quite the capricious character. The time she spends in the book-worlds is her idea of fun, and she doesn't really care about the lives she touches or how deeply she touches them. Eve expresses some admiration for Hazuki's tenacity in chasing her, but doesn't truly love her, and spares no thought for her once [[spoiler:they're back in their respective worlds and Hatsumi's existence is wiped out. At the end, Eve just talks about how much she wants to go on her next adventure, showing the experience with Hazuki didn't affect her]].
* BleachedUnderpants: The game has explicit sex scenes. The anime merely has copious fanservice in the form of scanty clothing and huge breasts.
* BrotherSisterIncest: Hazuki/Hatsumi, since they are sisters (but not by blood). Implied with [[spoiler:Eve/Lilith]], as they are seen lying on the floor in a suggestive position in the last episode.
* ButtMonkey: Ken-chan is abused for laughs several times per episode (that he appears in). He spent the entirety of episode 5 tied up and upside down, for instance.
* CatSmile: Meirin does one when she's thinking to use Lilith to help her increase her magical power.
* CharacterExaggeration: In the game, Lilith is an intelligent and cunning woman, if somewhat of a flirt. Only the 'flirt' part seemed to make the transition to the anime, leaving her a borderline bimbo with a lust for Hazuki that wasn't present previously--though even in the anime she hints at being more intelligent and compassionate than meets the eye now and then.
* CipherScything: The nameless body-hopping protagonist of the game is replaced by the minor character Hazuki.
* CuteMute: Hatsumi. Subverted; she actually can talk at times.
* DangerousSixteenthBirthday: Hatsumi/Eve disappears from any world she enters upon turning 16.
* ADateWithRosiePalms: Hazuki twice masturbates to thoughts of Hatsumi in episode 7.
* DidNotGetTheGirl: [[spoiler:At least in the anime, Hazuki does not get Eve. Instead, she gives birth to her.]]
* DimensionalTraveler: Eve and Lilith, as the keepers of the Great Library, have the power to get into the book worlds and leave whenever they want. Hazuki is one only because she's with Lilith.
* DrivenToSuicide: [[spoiler:Although Ritsuko saves Princess Mariel from Gargantua's possession, Mariel feels she's tainted by having the blood of his darkness inside her and takes poison to end her life.]]
* EvenTheGirlsWantHer: Hazuki has lots of fangirls at her school who try to give her gifts and letters, or just squeal when she's playing sports; however, [[SingleTargetSexuality if they're not Hatsumi, she's not interested]].
* FalseCameraEffects: This show is rather fond of JitterCam, using it three times in the OP alone.
* {{Fanservice}}: Covering pretty much every sub-category, too.
* ForeheadOfDoom: Lilith makes fun of Eve for having a big forehead and gives her a nickname based on it.
* FracturedFairyTale: One story involves a princess who must choose from a selection of princes who are, due to tradition, forced to dress up like frogs and hop around...
* FriendToAllLivingThings: Quill.
* GainaxEnding: Fans are divided as to whether it's a DownerEnding or not.
** Only because we don't have a 'bullshit! ending' trope...
** It's actually three endings at once, none of which fit together. In one part, Hatsumi leaves a message, in the next, the message is entirely erased. Many fans nowadays seem to think the ending is supposed to be a Pick-and-Choose-your-ending thing.
* GaidenGame: ''Yamibou''s visual novel was given one in the form of ''Koge to Lilith no [[GratuitousGerman Nachtmusik]]''. It's basically Lilith having lots of encounters with people in [[{{Cosplay}} various outfits]]. FridgeBrilliance dictates that it's probably to make it easier to fit in wherever she goes...
** Bonus points for some of those outfits being [[ShoutOut call-backs]] to some of the older games that Carnelian worked on, like ''[[MoonlightLady KaoNoNaiTsuki]]'' and ''Machine Maiden''.
* GenerationShips: Episodes 10-11 are set in a colonization starship that's been travelling for 200 years. The only surviving members are the children, but the corpses of their parents are preserved for the computer to trick them into thinking they're not dead.
* GigglingVillain: The Oborokamenshuu are always accompanied by a creepy, feminine giggle that's not clear whether it comes from them.
* GodGuise: In the stone age world, the inhabitants worship a God symbolized by an eyeball. They mistake Lilith for a divine messenger because of her eyeball hat and worship her. She takes full advantage of this.
* HairIntakes: Milka has this hairstyle.
* HardDrinkingPartyGirl: Tamamo no Mae is a sassy woman who's always drinking sake.
* HotLibrarian: In a more literal sense.
* IdenticalStranger: Hazuki thinks Fujihime is Eve. Fujihime looks exactly like Eve, except the former has purple eyes and the latter has red.
* IdiotHair: The ButtMonkey Ken-chan has a prominent and curly cowlick on top of his head.
* ImmortalImmaturity: Lilith and Eve are rather immature despite being thousands of years old.
* ImmortalityBeginsAtTwenty: Gargantua and Ritsuko are bathed in the "Light of Eve" as young children, which causes them to stop aging once they finish growing up.
* InexplicablyAwesome: There's no indication that Hazuki learned swordsmanship in her world, but she's very good with her sword and can even easily defeat samurai from the medieval Japan world.
* IWillFindYou: The journey to find Hatsumi/Eve drives the plot. Hazuki wants to bring her back to her world, not wanting to let go of her beloved sister/love interest. Lilith wants to bring her back so she'll do her job at the Great Library. Gargantua is madly in love with her and wants to see her again.
* JigsawPuzzlePlot
* {{Joshikousei}}
* KansaiRegionalAccent: Ken-chan has this accent.
** So does Meirin, which makes Ken-chan warm up to her.
* {{Kawaiiko}}: Lilith, among others.
* {{Kitsune}}: Youko Meirin from the medieval Japan world is a fox girl with two tails who can cast fire magic.
* LikeParentLikeSpouse: The reason behind Lilith's crush on Hazuki is that she reminds her of her father, [[ParentalIncest whom she was in love with]].
* LoveLetter:
** Hatsumi/Eve is given a love letter by a boy in episode 1. Hazuki finds out and harms her out of rage.
** Episode 7 has Hazuki receive love letters from an anonymous sender. At the end, it turns out that [[spoiler:Hatsumi was the sender]].
* MagicalLibrary: The Great Library consists of books that contain every single world of the multiverse down to the smallest detail.
* MagicLibrarian: Eve and Lilith are immortal dimension-travellers with the job of running the library from which all worlds originate.
* MayflyDecemberRomance: Hazuki is a normal human girl who's in love with Hatsumi/Eve, who's a sort of deity.
* MedievalEuropeanFantasy: Gargantua's world of origin (episodes 3-4), a rustic place with kings, princesses, castles and ostracized witches. Weirdly, the witch has a Japanese name, Ritsuko.
* MilkingTheGiantCow: Gargantua usually expresses himself in bombastic body language, kind of as if he was dancing ballet.
* MinorMajorCharacter: Arya, the silver-haired boy who appears in every world in a minor role and serves as narrator. Is also [[spoiler:Lilith's hat]].
* MultipleTailedBeast: The kitsunes Youko Meirin (two tails) and Tamamo no Mae (nine).
* NiceHat: Lilith's huge black hat with a single giant eyeball.
* NoPeriodsPeriod: Averted, though it's pretty indirect. In episode 7, Hatsumi texts Hazuki before PE, "Uh oh. It came on all of a sudden! Hazuki, do you have one of those?" Hazuki rushes to give her tampons, presumably.
* NotBloodSiblings: In Hazuki's world, Eve is her adopted sibling Hatsumi, and Hazuki is in love with her.
* NotGrowingUpSucks: Milka is stuck as a little girl because of magic. She laments that she can't get a lover that way.
* NubileSavage: Quill.
* ObfuscatingStupidity: Hatsumi is nowhere near as innocent or cute as she first appears.
* OrdinaryHighSchoolStudent: Azuma Hazuki.
* PantheraAwesome: Rascalas the white tiger, Milka's pet/friend/guardian.
* ParentalAbandonment: Hazuki and Hatsumi may well have parents, but they never appear, though Hazuki asks her mother a question in the final episode.
* PillarOfLight
* PortalCrossroadWorld:
** The Great Library is the place from which all the worlds, contained in books, are accessed.
** The Universal Garden is also a space between the worlds, but the worlds that its doors lead to are random.
* ReallySevenHundredYearsOld: Possibly. FridgeLogic suggests Hazuki has spent an improbable amount of time in various books, and it may be more like seven million. Of course, time itself is up for grabs in this series.
* {{Reincarnation}}: Eve is repeatedly born as a child in every world she decides to be a character in. [[spoiler:And she will be born again into Hazuki's world, as her child.]]
* RetGone: In the last episode, [[spoiler:Hatsumi's existence is eliminated from Hazuki's world, reflected by Hazuki forgetting about her and pictures being altered to remove Hatsumi.]]
* SchoolgirlLesbians: Hazuki is 15 and in love with Eve, who's 16 in her world (but is actually much older). The ending shows that [[spoiler:Hazuki will get in a heterosexual relationship as an adult.]]
* ShipSinking: Nothing quite kills a ship like [[spoiler:giving birth to the person you're in love with. Hazuki giving birth to Eve is what will happen in the show's future.]]
* ShortHairWithTail: Milka has this hairstyle.
* ShoutOut: Leading to possible EpilepticTrees - Hazuki shares her last name with Io Azuma, a protagonist of ROOT's previous visual novel (also with Carnelian's art), ''[[MoonlightLady Kao no Nai Tsuki]]''.
* SmallAnnoyingCreature: Ken-chan with his obnoxious and perverted commentary is prone to getting chastised or ignored by the main characters, especially the ultra-serious Hazuki.
* SpellMyNameWithAnS: Upon broadcast, the most commonly-viewed fansubbed version of the anime had some rather different ideas on name spellings. Among them were Marieru instead of Mariel, Garuganchua instead of Gargantua, Jiru instead of Jill, and most noticeably, Ririsu instead of Lilith. (Curiously, they did not render Adam and Eve as Adamu and Ibu.) A re-release by a different group in 2007 used the romanizations listed in TheOtherWiki.
* SpitTrailKiss: Hazuki and Hatsumi's love scene in the last episode has a deep kiss which leaves a trail of saliva between them.
* SuperDeformed: Koge-chibi looks like a super deformed Lilith but is a separate person.
* ThemeTuneCameo: Hazuki and Hatsumi listen to the OP song on the way to school in episode 7.
* TickleTorture: In episode 10, Gargantua tickles Lilith so she'll tell him where Eve is. The tickling is in suggestive places and her laughing looks a lot like she's orgasming.
* TrappedInAnotherWorld: In several worlds, actually.
* UniversalAdaptorCast: The characters reenact the plots of several books.
* UnusuallyUninterestingSight: Hazuki's sailor suit doesn't draw much attention from most of the worlds based on ancient time periods. That is, except for Meirin, who calls her out for her weird clothes in a throw-away line.
* TwelveEpisodeAnime: The anime has 13 episodes.
* WagonTrainToTheStars: Episodes 10-11 feature a spaceship that's carrying humans to a new planet for them to settle in.
* YoungerThanTheyLook: Hazuki at 15 is taller, stronger and more mature-looking than Hatsumi at 16.

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