[[quoteright:318:http://static.tvtropes.org/pmwiki/pub/images/yotsubabike_4949.JPG]]

->''Today is always the most enjoyable day!''

''Yotsuba&!'' (''Yotsuba to!'' in Japanese) is a SliceOfLife comedy manga by Kiyohiko Azuma, creator of the acclaimed ''Manga/AzumangaDaioh''.

It stars a [[CheerfulChild cheerful]], [[GenkiGirl energetic]] five-year-old girl named Yotsuba Koiwai, who moves into a new neighborhood with her adoptive father. She doesn't know very much about the world around her and is incredibly curious, but her father and their new neighbors (the Ayase family) are willing to help her out. Or get dragged along in her wake, as the case may be. She does, technically, know the meaning of "restraint", but she has [[{{Malaproper}} trouble pronouncing it]].

Twelve volumes have been released thus far in Japan, as of June 2013. It was formerly licensed in English by ADV Manga, who brought out five volumes intermittently, but now by Creator/YenPress which picked up with volume six (as well as reprinting the first five). The odd title comes from how [[IdiosyncraticEpisodeNaming every chapter]] ([[OddNameOut but one]]) is named "Yotsuba & ''Whatever''," where ''whatever'' is the new thing or concept she encounters that day, and the exclamation mark comes from her way of [[GenkiGirl throwing herself full-throttle]] into anything she does. The series has been described by one reviewer as "printed joy" and rightly so. Azuma somehow manages to create a series that's both [[{{Iyashikei}} feel-good happy]] and [[CrowningMomentOfFunny side-splittingly hilarious]]. Not for nothing is the series motto "Enjoy Everything."

Despite its popularity, no animated adaptation is in the works, and [[WordOfGod according to Azuma himself]], Yotsuba [[http://www.animenewsnetwork.com.au/news/2008-12-04/yotsuba&creator-kiyohiko-azuma-addresses-anime-rumors isn't well suited to an animated format]].

Be sure to check out the [[{{Characters/Yotsuba}} character sheet]] for character tropes as well.
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!!Contains examples of:
* AdultFear: Naturally. Sometimes even PlayedForLaughs, others not so much.
* ArtEvolution:
** Yotsuba's appearance in particular develops between Chapter 1 and, for example, Chapter 27, so that she looks more like a 5-year-old, with shorter, more shaped ponytails. By around Chapter 53, the shape of her eyes have changed still more, along with some of her casual expressions.
** By volume 6, Yotsuba no longer has any whites in her eyes on the front covers of the books.
* ArtificialRiverbank: A perfect place to potter around on bicycles with a girl still using training wheels, right? Well, maybe not.
* BanisterSlide: How Yotsuba beats her father down the stairs of a [[ShrinesAndTemples hilltop shrine]].
* BeachEpisode: Two, one each in the beach and pool variations. Being a SliceOfLife series, neither counts as filler.
* BeamOfEnlightenment
* BearsAreBadNews: Subverted with several teddy bears, including Yotsuba's "beddy tear", Duralumin.
* BeatPanel: Usually from Dad.
* BerserkButton:
** Never touch Yotsuba's candy. Ever.
** Or if you happen to be a dog, take Duralumin from her.
** Jumbo seems to have a few. What triggers them? Well... no one knows really.
** For many members of a certain {{image board}} Yotsuba is the Berserk Button... don't ask. Specifically, [[EvenEvilHasStandards don't ask for any]] {{Rule 34}}.
* BlandNameProduct: Averted several times, more often than not -- for example, Koiwai gets a package from amazon.co.jp, complete with the distinctive logo.
* BlankWhiteEyes: Eventually happens to just about everyone around Yotsuba, and to Yotsuba herself, occasionally.
* BlueWithShock: Well, hatched black lines of shock.
* BlushSticker: Yotsuba, appropriately enough, gets two bright circles on her cheeks when her reading ability is praised -- but it also once happens with Jumbo, when he thinks he's about to meet Asagi.
* BreadEggsMilkSquick: In chapter 77, Yotsuba shows Torako the pictures she's been taking: a dog, a park, her dad's foot, and ''a yakuza'' ([[FaceOfAThug or at least that's what Yotsuba assumes he is]]).
* BrokenGlassPenalty: At one point, Yotsuba kicks a soccer ball out a closed window by accident. Her dad spanks her (though, as we learn, this is because she lied about it and her father dislikes lies).
* CantYouReadTheSign: Yotsuba leans over the arm of an escalator... and hits her head on a sign warning not to do just that. Made even funnier when Dad mentions that he's never seen that happen before.
* CastOfSnowflakes
* CatSmile: Two from Fuuka, one from Ena, and one from Yotsuba.
* CheerfulChild: Yotsuba is a curious little fireball -- at least for the first few volumes. As the series progresses and her characterization gets more nuanced, she becomes not universally cheerful: so far, she's been shown having two meltdown tantrums, a day of total dejection, as well as a fit of sulks that Koiwai and Yanda had to cajole her out of. Not so much averted as [[CharacterDevelopment made part of a three-dimensional character]].
* CicadianRhythm: Subverted in the first chapter when Yotsuba climbs a telephone pole and pretends to be a cicada. Later [[LampshadeHanging lampshade hung]] when she develops an obsession with ''tsukutsukuboushi'', a late-summer species said to bring the end of summer, to the point that she thinks they are summer-ending fairies; she then dresses up as how she imagines they look and claims she can end summer herself.
* CombiningMecha, Augment variation: Parodied when Jumbo [[strike:combines with]] carries Yotsuba on his shoulders so her net can reach cicadas higher up the tree trunks. They even yell "GATTAI!"
* ComedicUnderwearExposure: Koiwai generally wears boxers around the house during summer, and Yotsuba claims that he hates wearing pants.
-->'''"I AM BOXERMAN!"'''
* ComplimentBackfire: Played straight at Fuuka: "People look cool on bicycles ... even Fuuka." Yotsuba was musing to herself with no one around, so Fuuka never heard this. Inverted (or maybe that should be obverted?) at Asagi when Yotsuba played OppositeDay and blurts out, "Asagi's an ugly old hag!" Definitely heard by Asagi, for a CrowningMomentOfFunny.
* ContinuityNod: All ''over'' the place.
** Pay particular attention to the "Yotsubox" in the corner of the tv room, where Yotsuba keeps, er, treasures picked up in previous chapters, and which accumulates drawings of people she meets.
** The wall above Koiwai's desk collects Yotsuba's drawings and photos.
** Yotsuba's stool for pancake-making is the little thing Koiwai made to practice for the bookshelf.
** Torako actually kept the dirty ball Yotsuba gave to her as a souvenir. Awww...
** Fuuka thinking Mr. Koiwai is a Konnyaku maker. This joke was unfortunately LostInTranslation.
* CoolAndUnusualPunishment: Yotsuba claimed a "lying bug" was making her lie, so her dad put her in the enclosure of a guardian ''niō'' statue at a Buddhist temple, claiming it'd "get rid of" whatever was lying. Cue complete meltdown and a bawled confession that she was the one lying, after which Dad let her out.
* CoolBigSis: Several, played varying degrees of straight and averted.
** Played straightest with Asagi, who is the [[OddNameOut only character to displace Yotsuba]] from a chapter title, and even gets her own CrowningMomentOfAwesome.
** Similarly, Yotsuba repeatedly describes Torako as "cool", and more than once seeks her approval for the coolness of things. In Torako's case, she even has the [[AloofDarkHairedGirl cool personality]] to go with the trope.
** Yotsuba treats the other Ayase girls, Fuuka and Ena, as older sisters, to the point of calling their mother "Mom." Ena, however, is more playmate than anything else, and in chapter 66 Yotsuba calls Fuuka "like an ''onee-san''" (a polite, formal address for a "big sister" figure) for knowing "bonjour", which raises her opinion of Fuuka. Fuuka is not pleased to learn she hadn't been thought of as a CoolBigSis all this time.
** Miura being a CoolBigSis is averted with a [[{{Lampshaded}} lampshade]]: when she asks Yotsuba to be quiet so "nee-san" (a polite, informal address for a "big sister" figure) can study, Yotsuba laughs at the idea of calling her that.
* CoversAlwaysLie: The first couple volumes show things that never happen, though they at least indicated the right genre. Averted in the next few volumes with covers depicting a scene from an incident within, but volumes 9-11 return to non-canon depictions, this time in watercolors, fitting with the gentler spirit of their content. Volume 12 returns to aversion with another in-volume scene.
* CrossPoppingVeins: On Yotsuba and Dad when they get mad at Yanda, and Miura when she gets mad at Jumbo.
* CutenessProximity: Yotsuba's dad appears to have a mild case at the zoo, around the guinea pigs.
* DepartmentOfRedundancyDepartment:
--> '''Torako''': A folding bicycle is just that, a bicycle you fold up.
--> '''Asagi''': You keep piling on the new information there.
* DespairEventHorizon: When [[spoiler: Duralumin's voice box is broken]], Yotsuba almost goes catatonic with grief.
* DontYouDarePityMe: Yotsuba, frustrated by her failures at the GoldfishScoopingGame, was offered a free goldfish by the stall owner. Yotsuba rejects his offer by this reasoning.
* DropInCharacter: One each of the annoying and cute varieties: Yanda is the annoying one for the Koiwais and Yotsuba herself the cute one for the Ayases.
* DroppedABridgeOnHim: [[spoiler: Cardbo/Danbo.]] [[spoiler: Until Chapter 69]].
* {{Emoticon}}: Suggested by Asagi to Yotsuba while serving as "e-mail". Her expression at the end of the chapter is a dead-on visualization of the O____O emoticon.
* EngagingConversation: Wait until you grow up before marrying Fuuka, Yotsuba! We know cake is nice, but...
* EpisodeFinishesTheTitle: The title of each chapter of ''Yotsuba&!'' follows the structure of "Yotsuba & [insert word here]".
* EveryGirlIsCuterWithHairDecs:
** Yotsuba's cute enough normally, but when she dresses for a [[FestivalEpisode festival]] with bunny hair ties for her pigtails, the {{kawaii}} is turned UpToEleven.
** The kerchief in the Flower Cupid's hair.
** Miura gives Ena two flower-shaped hair clips as a souvenir of her trip to Hawaii.
* ExactlyWhatItSaysOnTheTin: Every chapter. When one is titled "Yotsuba & Cake", you are indeed going to get a story about Yotsuba and some cake.
* ExplosiveOverclocking: When Yotsuba wants to hit every button in an elevator, Ena warns her she's going to cause this.
* FaceDoodling: Yotsuba on Dad.
* FestivalEpisode: A couple: the town fireworks festival, Fuuka's SchoolFestival, and a local [[ShrinesAndTemples shrine]]'s festival.
* FloatingTimeline: While each chapter takes place on a specific date, which in 82 chapters has run from mid-July to the start of November, WordOfGod is that each chapter is set in the year it's published. This allows Azuma to keep technology and pop-culture references current, instead of stuck back in 2003 when he started.
* FourLeafClover: Yotsuba is named for it, her hair resembles one, and she gives one to Asagi.
* FreeRangeChildren: Yotsuba has no trouble darting around town without supervision. However, aside from a couple famous episodes that have made this almost a trademark for her, the series averts this in that she usually ''is'' supervised (either by Koiwai or an Ayase), and at one point deconstructs it as well: At the [[FestivalEpisode fireworks festival]], because Yotsuba hasn't realized the potential dangers of getting lost in a crowd, after she runs off, Koiwai has Jumbo, Ena, and Miura hide to teach her a lesson.
* FunnyBackgroundEvent: Koiwai losing his ladle in chapter 85.
* GenkiGirl: As Asagi puts it, Yotsuba's default mode of travel is "run".
* GirlsLoveStuffedAnimals: Ena (not only her two main teddy bears but some other plushies) and Yotsuba (after acquiring Duralumin, Yotsuba begins carrying it ''everywhere'') are of course prime age for this, but in a ShoutOut, Fuuka has a [[Manga/AzumangaDaioh Chiyo-chichi]] in her room.
* GivingSomeoneThePointerFinger: Yotsuba, underscoring that she really is a small child. Dad also uses it once, in an appropriately dramatic way.
* GoldfishScoopingGame: At the town [[FestivalEpisode fireworks display]], where Yotsuba gets to play more than the usual three times.
* GollumMadeMeDoIt: Used as an excuse by Yotsuba: "A lying bug made me do it."
* GratuitousEnglish: Yotsuba especially -- but then, her father lets her watch adult gangster movies.
* HairColors: Yotsuba's is green, which really stands out in a series otherwise relentlessly grounded in the real world.
** Some fans (spurred in part by ADV's back-cover copy) have suggested that Yotsuba's hair is a plot point, hinting at an extraterrestrial origin.
* HappyDance: Done by Koiwai with Yotsuba as backup when he completes a assignment with an all-nighter. Arguably by Miss Stake with Fuuka and Yotsuba as backup when cooking a cake.
* HappyRain: An early CrowningMomentOfHeartwarming comes when Yotsuba gleefully plays in a rainstorm: "Nothing in this world can get her down. Nothing." Yotsuba later shows that she considers ''all'' rain to be HappyRain -- even typhoons.
* HellishPupils: Yotsuba sometimes gets this, but it indicates nothing more ominous than her being startled, both in good and bad ways.
* HypocriticalHumor:
** Fuuka mocks Jumbo and Koiwai for not knowing how to swim. Then Yotsuba pushes her in. ''Fuuka'' can't swim. (Yotsuba, on the other hand, is a very good swimmer...)
** In "Yotsuba & Festivals" Ena makes fun of Yotsuba, who's scared of a man wearing a Tengu mask -- and is promptly startled by him.
* ICanSeeMyHouseFromHere: So Yotsuba claims from a [[ShrinesAndTemples hilltop shrine]]. After a moment, Koiwai turns her 90 degrees to face the correct direction.
* IWasToldThereWouldBeCake: To Yotsuba, pound cake ''doesn't count''.
* IdiosyncraticEpisodeNaming: With chapter 14 as the OddNameOut.
* ImageSong: Two [=CDs=] have been released, both entirely instrumental. One follows Yotsuba through the course of a imaginary typical day, and the other through winter. Both are excellent.
* IncrediblyLamePun: Fuuka's [[WeaponOfChoice weapon of choice]]. Perhaps fortunately, most get LostInTranslation.
* InformedAbility: Asagi is supposedly very popular with the guys, but she's never seen with a boyfriend. Of course, this ''could'' be due to [[spoiler:her [[LesYay relationship with Torako]]]].
* {{Iyashikei}}
* [[RockPaperScissors Janken]]: Played by Yotsuba and Dad with the loser getting swatted with a rolled-up newspaper if they don't cover their head with a basin in time.
* JapaneseHolidays: Yotsuba has so far been involved in O-bon and Respect for the Aged Day. Fuuka's school's [[SchoolFestival Cultural Festival]] and the autumn Danjiri Festival also sort-of count, though they're not technically ''holidays''. (Halloween, of course, doesn't count at all.)
* {{Jerkass}}:
** Yanda, who flat-out ''enjoys'' his role as Yotsuba's "[[SitcomArchNemesis nemesis]]". This is somewhat subverted in that Dad and Jumbo are aware he's a jerk; they seem to put up with him only because he's Dad's ''[[SempaiKohai kohai]]'' and they consistently take Yotsuba's side in her squabbles with him. He eventually starts behaving a bit better, to the point of possibly graduating to JerkWithAHeartOfGold.
** Asagi is a minor example. She doesn't pass up opportunities to mess with her sisters (especially Fuuka) and Yotsuba, although she does realize when she's gone too far -- for example, after seeing Yotsuba's reaction to swiping the strawberry from her cake, Asagi quickly returned it, much to the dismay of her mother, whose strawberry she had already eaten at that point.
* {{Joshikousei}}: Fuuka and her classmates.
* {{Kawaiiko}}: Flower Cupid - [[SubvertedTrope subverted]] by Yotsuba's packing heat when she goes out.
* KickTheDog:
** Mrs. Ayase has one during a flashback to Asagi's childhood. When Asagi gives her a four-leaf clover, Mrs. Ayase smiles and says she would like a five-leaf clover instead. As the flashback ends with Asagi tearfully trying to find a clover that is even rarer, Mrs. Ayase wonders how Asagi grew to be "such a bad seed."
** Yanda permanently ensures the wrath of Yotsuba by taking a bite out of her ice cream.
** Yotsuba has her own KickTheDog moment, for values of "dog" that include "goat" and of "kick" that include "punch with her fist." It was, however, [[CrowningMomentOfAwesome awesome]]. Plus, [[JustifiedTrope the goat deserved it]].
** Torako, oddly enough, also gets one of these: when she first meets Yotsuba, she blows smoke in the girl's face. It's a bit at odds with her later portrayal.
*** She may have done it to demonstrate that [[SmokingIsCool smoking]] is ''not'' as cool as Yotsuba thinks.
* {{Leitmotif}}: In the [[ImageSong Image Songs]].
* LostInTranslation:
** Several jokes, not surprisingly. One is concerning Yotsuba explaining what her dad's job is, when she says makes ''konnyaku'', a type of gelatin-like cake made from a yam-like plant, instead of ''honyaku'' or translations. Yotsuba claims he's a 'trainspotter' in the ADV translation or a 'trashmaker' in the Yen Press version. The problem is the BrickJoke comes back in a later chapter, when Fuuka sounds like she's making a non-sequitur about Yotsuba's dad's konnyaku business being a trade secret.
** There's a running gag about how Jumbo has never met Torako before and assumes that she might be Asagi's boyfriend (note that Yotsuba keeps referring to her as Tora, which is gender neutral -- Japanese speakers rarely use third person gendered pronouns). The problem comes up when Jumbo refers to Torako as a 'she' when he was looking at her photos of the hot air balloon event.
** The hysterically funny effect of Yotsuba combing childish speech patterns, including [[ThirdPersonPerson referring to herself by name]] instead of pronoun, with an innocent imitation of her father's masculine language has never been reproduced in English.
* MamaBear: With a real (toy) bear cub, even. Don't get between Yotsuba and Duralumin.
* MemeticMutation: Exemplified InUniverse with the teddy bear Duralumin, who shares a name with a metal alloy but is really Yotsuba's [[{{Malaproper}} mispronunciation]] of ''Ena's'' stuffed bear Giulietta.
* MindScrew: Asagi's [[WeaponOfChoice weapon of choice]].
* {{Mondegreen}}: in-universe example -- Yotsuba any time she sings. The humor usually doesn't [[LostInTranslation translate out of Japanese well]].
* MundaneMadeAwesome?: EVERYTHING in Yotsuba's world is awesome, and "today is always the most enjoyable day." From delivering milk, to riding a bike, to going to the supermarket, each trip is like an Odyssey to Yotsuba.
* MundaneObjectAmazement: Yotsuba can be amazed at just about anything -- if she's never met it before.
* MyCard: Yotsuba has her own (rather crumpled) business card.
* NoCartoonFish: More like No Cartoon ''Animals''; most of the animals are photorealistic, though the fish, in particular, are ''disturbingly'' so. The main counterexample are the dogs, which tend to the cartoony, particularly those dogs Yotsuba barks back at.
* NoLongerWithUs: Asagi talks about her salaryman father like this, though he's most definitely not dead. The first time she does it, Fuuka calls her on it, saying "No, no, no. Dad is ALIVE. He's working right now."
* NobodyPoops: Averted. Also, mentioning a bodily function makes Yotsuba burst into the giggle-fits you'd expect from a five year old.
* NotWhatItLooksLike: Happens quite often to [[ButtMonkey Fuuka]].
* OhCrap: Given a GenkiGirl with a five-year-old's coordination, no surprise this [[HilarityEnsues happens a lot]]; the most notable is possibly when Yotsuba thinks she broke a bicycle in a bicycle shop.
** Another moment worth mentioning is when she ate her father's snack; she did get something else for him anyway.
** When she took the Ayase sisters to visit her home, to give Fuuka some coffee after Yotsuba failed doing so twice, her father discovers she lied to him. Just look at her face.
** A non-Yotsuba example is when she wanted to go out when there was a typhoon. She really did. The Ayase family wasn't amused.
** A moment where she borrowed an exercise ball and accidentally broke several cups.
** Ena and Miura help Yotsuba wash Duralumin after being stolen by a dog. They forgot that the stuffed bear was supposed to talk and only remembered after taking it out of the washer.
* {{Ojou}} - Yotsuba, Ena, and Miura play at being "fancy young ladies" in the car while driving to the campground.
* OminousOwl: When Yotsuba visits the zoo, she's terrified by the owl.
* OneOfTheKids: Much of the grown-up cast, to an extent, but Yanda is the most childish of the bunch.
* OppositeDay: Yotsuba never spent a chapter playing the Opposites Game, not even once.
* ParentalAbandonment: As Jumbo puts it, "Yotsuba was an abandoned child"; all Koiwai has said is that while he was traveling overseas for his work, he found himself taking care of her. Yotsuba herself remembers only living with her adoptive grandmother and, before that, on an island that's "to the left". The Ayases have no idea what she means, either.
* ParentalFavoritism: More than either of her older sisters, Ena is Daddy's little girl.
* PetMonstrosity: For whatever reason, Fuuka got Ena a ''crocodile'' when she had found a small hamster in a prototype chapter.
* PetTheDog: In chapter 72, [[JerkAss Yanda]] starts treating Yotsuba better. A little.
* PlayingHouse: Done by Yotsuba both with Ena and by herself. Not to mention Playing Zoo with Jumbo.
* PlummetPerspective: When Yotsuba drops Juralumin from the hot-air balloon. [[spoiler:"IT LANDED ON ITS FEET!"]]
* PottyEmergency / PottyFailure: Suggested by Yotsuba when Koiwai bends over to grab his wallet and finds he left it at home.
* ProtagonistTitle
* PuppyDogEyes: Yotsuba, when she's on the verge of tears or particularly amused by something.
* RainAura
* ReactiveContinuousScream: In chapter 13, after Miura scares Yotsuba with a scarecrow costume, Ena scares ''Miura'' with a live frog, who backs into Yotsuba, who renews her screaming and tears Ena's favorite teddy bear, causing ''her'' to scream.
* RoaringRampageOfRevenge: Yotsuba goes on a truly ''adorable'' one of these (with a water pistol) after Dad lets her watch one too many gangster movies.
* RunningGag: A couple.
** Fuuka's apparently strange taste in T-shirts
** Women (Ayase or otherwise) being startled by the looming height of Jumbo.
** Yotsuba becoming excited and then falling on her face after running around. It gets to the point where Asagi accurately predicts when Yotsuba is about to fall during the balloon festival.
* ScareEmStraight: Koiwai tries to do this with Yotsuba when he catches her lying repeatedly. We'll see if it takes ...
* ScaryScarecrows: Yotsuba is ''terrified'' of these, even though the scarecrow in question looks more like a bullseye target than a traditional Western scarecrow. (Given she's also frightened by the [[OminousOwl wide-eyed owl]] at the zoo, it may be the resemblance to a giant eyeball that scares her.) Miura tries to prank Yotsuba by pretending to be one, with results that were, well, let's just say it worked a little ''too'' well.
* SceneryPorn: Plenty of lavishly-detailed backgrounds of Japanese suburbia. The countryside gets the same detailed treatment during the camping arc.
* SchoolFestival: At Fuuka's school.
* SecondEpisodeMorning: At the start of chapter 2, Yotsuba wakes up confused until she remembers they moved yesterday.
* SecondFaceSmoke: Torako does this to Yotsuba in their first encounter.
* SeinfeldianConversation: Chatting with Yotsuba sometimes turns into this as her energetic little mind bounces from one thing to another.
* SempaiKohai: Dad's ''kohai'' Yanda, whom Dad lets visit even though Yotsuba instantly hates him with a hatey hate.
* ShoutOut:
** Multiple ones to ''Manga/AzumangaDaioh'': Fuuka once wears a T-shirt with Chiyo-chichi's picture on it, has a Chiyo-chichi plushie in her room, and a Chiyo-chichi figure among the "weird" things attached to her purse. Also, at the town fireworks show, a Nekokoneko is a prize at a ring-toss booth. The dog at the farm/ranch visited in chapter 48 strongly resembles Tadakichi-san. In chapter 63, Yotsuba and her dad play a game on a swing that involves kicking off one of their shoes as far as they can; which is reminiscent of Osaka's famous weather prediction.
** One chapter, Yotsuba watches ''Series/PythagoraSwitch'' on the TV. In a later chapter, a "father switch" from the show is on the kitchen table; it [[ContinuityNod eventually]] shows up in the Yotsubox. (This is probably ''also'' a shout out to the Kuricorder Quartet, as they did the music to ''Series/PythagoraSwitch'', as well as ''Manga/AzumangaDaioh'' and the two ''Yotsuba&!'' image albums.)
** Yotsuba makes a sly shoutout to {{Gamera}} in the lead-up to the balloon festival.
** Duralumin was the villain in OsamuTezuka's classic manga ''PrincessKnight''
* ShownTheirWork: Comes up in the most unusual places. The bears in the teddy-bear shop are based on actual designs. The ridiculously-expensive Steiff one even has the trademark button. (The one Yotsuba chooses to be Juralumin, however, is a generic.)
* ShrinesAndTemples: Both of them: Yotsuba visits the grounds of a hilltop shrine a couple times and participates in her town's autumn ''danjiri'' festival, pulling a portable shrine through the streets. Koiwai takes Yotsuba to a temple and uses a guardian ''niō'' statue to [[ScareEmStraight scare the "lying bug" out]] of her.
* SickEpisode: Yotsuba, on the day she was supposed to visit a farm, no less. Meltdown ensued.
* SinkOrSwimFatherhood: And Koiwai has risen ''admirably'' to the task.
* SkintoneSclerae: Yotsuba as of volume 6.
* SleepCute: Yotsuba, Koiwai, Ena, and Fuuka, on the train back home, after a long day at the [[BeachEpisode beach]].
* SliceOfLife: Each chapter is an episode in Yotsuba's literal daily life -- as in taking place on sequential, or nearly sequential, days; TheOtherWiki [[http://en.wikipedia.org/wiki/List_of_Yotsuba%26!_chapters details the exact calendar]].
* SlidingScaleOfIdealismVersusCynicism: While not as idealistic as, say, ''{{Manga/Aria}}'', the series doesn't even come within sight of cynicism. For one thing, while Japanese children are somewhat more [[FreeRangeChildren free-range]] than in the States, Yotsuba still gets away with a lot. That it's a [[CrowningMomentOfHeartwarming Crowning Series of Heartwarming]] topped with [[CrowningMomentOfFunny Crowning Sprinkles of Funny]] doesn't hurt.
* SmokingIsCool: Why Yotsuba thinks Torako is awesome, even though her father told her that smoking is bad. Then again, Yotsuba claims that Koiwai used to smoke...
* SomethingPerson: Koiwai sometimes transforms into Yotsuba's nemesis, Boxerman -- by putting a pair of boxer shorts over his head. His special ability is being unable to tell up from down. "Curse you, Boxerman!" After Yotsuba saw men in fundoshi at a [[FestivalEpisode festival]], Boxerman acquired a rival, Barebuttman. Still later, Koiwai becomes yet another foe of Yotsuba's, [[ItMakesSenseInContext Pancake-Loving Man]].
* SpeechBubbles: Yotsuba speaks entirely in hiragana, the only form of Japanese writing she can read; everyone else's dialogue has the expected amount of kanji for the {{shounen}} audience. Yotsuba also frequently gets a big, loud, bold font that neatly represents how she [[GenkiGirl talks and acts]].
* SpitTake: Yotsuba's dad does a big one when Yotsuba hands him "milk" she made with toothpaste and water.
* StrongFamilyResemblance: Miura and her mom, lampshaded by Yotsuba and later confirmed by Koiwai and Jumbo. Miura disagrees.
-->'''Yotsuba''': She's a giant Miura.
* SuperSentaiStance: Parodied with Yotsuba, Fuuka and Koiwai in the BeachEpisode.
* SweatDrop: Another thing that happens to just about everyone around Yotsuba.
* SweetTooth: Mrs. Ayase has one. Asagi also qualifies, which sometimes leads to fights over sweet food between her and her mother.
* TakingTheBullet: Parodied when Koiwai protects Yotsuba from Jumbo dressed up as a {{tengu}}. "DAAAAADDYYYYYYYY"
* {{Tengu}}: Yotsuba is terrified of the tengu attendants at a [[FestivalEpisode cart-pulling festival]], even though she more-or-less understands they're humans in masks -- and even ten-year old Ena also finds them startling, despite teasing Yotsuba about it. The scariest is [[spoiler:Jumbo]], whom Yotsuba calls the "[[BossBattle boss]] tengu".
* ThereIsNoKillLikeOverkill: Asagi takes down water-pistol-assassin Yotsuba with a single squirt between the eyes...then shoots her several more times...then ''pours the rest of the water on her''.
* ThisIsADrill: Spoken word-for-word by Dad, as he shows Yotsuba a cordless drill.
* ThunderShock
* TinCanYouHearMeNow: Ena and Miura teach Yotsuba to make a paper-cup telephone, which she starts carrying with her as her "cell phone".
* TomboyAndGirlyGirl: Two pairs of 'em: The younger pair is Miura and Ena, respectively, who subvert the trope in that Miura is freaked by slimy things, while Ena is not only not fazed, but even enthusiastic about frogs. The older pair is Torako and Asagi, which according to some fans carries the LesYay of the series.
* TooSmartForStrangers: Yotsuba with Fuuka, before they are introduced and no longer strangers.
* TotemPoleTrench: Yotsuba on [[OneOfTheKids Jumbo]], with his [[GentleGiant shirt]] serving as trenchcoat.
* TryNotToDie: Played with -- Jumbo tells Yotsuba this when she heads next door on her RoaringRampageOfRevenge, but knowing, as always, the cultural trappings but not their true meanings, she replies, "Even if I die, I'll come back alive."
* UnnecessaryCombatRoll: Yotsuba has seen far too many gangster movies than is good for a girl [[strike:her age]] with her imagination.
* VerySpecialEpisode: Averted. Sure, Yotsuba learns life lessons, but they are ordinary, [[SliceOfLife everyday life]] lessons about things like not riding off on her bicycle without permission, how to flip pancakes, that she shouldn't lie, and how noodles get made. The tone of those chapters is just as light-hearted and hilarious as every other.
* VisibleSigh
* VisibleSilence: Extended ellipses and question-mark dialog galore, often in response to Yotsuba's latest misinterpretation. Once Yotsuba and her father have an exchange of question-mark dialog, as he wonders what she's wondering about.
* VomitIndiscretionShot: In "Yotsuba & Pizza", after she eats too much.
* WaterGunsAndBalloons: If a five-year-old and two [[OneOfTheKids adults with childish interests]] house-sit for you, you might end up with an indoor water balloon fight.
* WhatTheHellHero: See KickTheDog above.
* WhereTheHellIsSpringfield: The suburban setting of the series is not clearly defined, being something of a stand-in for suburbs ''everywhere'' in Japan. For what it's worth, the locations are drawn from photographic references taken around the author's home in Hyogo Prefecture, and the presence of a Danjiri Festival in autumn places it pretty concretely in the Kansai region. However, characters generally speak Standard Japanese, though that means little in fictional works not set in a concrete location, and Yotsuba's occasional [[KansaiRegionalAccent Kansai vocabulary]] can be excused via too much TV and RuleOfFunny. Let's just say the question remains open.
** Also, no one has any idea where Yotsuba was born and/or used to live. All she'll say is that it was "an island to the left."
** Though the fact that Fuuka's use of [[TohokuRegionalAccent Tohoku dialect]] in chapter 67 confused Yotsuba makes it pretty clear that we're not in northern Japan.
* WidgetSeries: Though not exactly "weird", it ''is'' deeply rooted in the rhythms of suburban Japanese [[SliceOfLife daily life]].
* WingdingEyes:
** Spiral version, when Yotsuba is dizzy or confused.
** Asagi once got star eyes when Yotsuba headbutted her. Ow.
* AWizardDidIt: Used as an excuse in "Yotsuba & Lies".
* {{Yonkoma}}: The "intermission" in volume 4.
* YouAreGrounded: Yotsuba is "dirted" (that is, grounded) for riding her bicycle without permission. [[{{Determinator}} Across town. To Fuuka's school. Alone]].
* YouGottaHaveBlueHair: Yotsuba's only, and it's green -- everyone else's is normal.
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