[[caption-width-right:320:Otani & Koizumi in the anime.]]

At 172 cm (about 5'7"), high school student Risa Koizumi is way taller than most other girls. This makes her very self-conscious, which she tries to cover up by acting strong-willed and sarcastic, rarely showing her more sensitive side in public. That her name means "Little Spring" adds to her problem.

Then she meets Atsushi Otani ("Big Valley"), captain of the basketball club, although he is short for a guy at 156 cm (5'1"). Otani's personality is a bit rough around the edges, so he and Koizumi don't hit it off well at first. Most of the time they try to one-up each other with snide remarks, giving them the reputation of being the high school's "All Hanshin-Kyojin" (referring to a comedy duo with one tall and one short member).

Despite all this they become good friends, since they share the same musical obsessions and zany sense of humor and they promise to help each other out with their crushes. It is only a matter of time then before Koizumi discovers she might feel more for Otani than just friendship. But does he feel the same for her too, since she is way taller than he is?

''Lovely Complex'' is a RomanticComedy [[{{Shojo}} shojo]] manga by Aya Nakahara that was published by ''Bessatsu Margaret'' from 2001 to 2006. It has been adapted as a anime and a live-action movie, starring Ema Fujisawa as Koizumi, and Teppei Koike as Otani. The manga also counts with a compilation of extra stories that was published a few years after the original ending of the manga, ''Love Com D''.

Creator/VizMedia licensed the manga series in the U.S., while Creator/DiscotekMedia released the anime series as sub-only in 2012.

!!This series features examples of:

* AccidentalKiss: [[spoiler:Otani passes out from his fever and falls on Koizumi's lips while trying to get a piece of rice out of her hair.]]
* AllGirlsWantBadBoys: While Otani surely isn't Mr. Sweet most of the time, he is the main target of a variety of girls who fall for him... including Koizumi, who is hardly Miss Sunshine, either.
* AlmostKiss:
** Happens twice in the manga with [[spoiler:Koizumi and Otani. The first time, they're interrupted by Mimi in Otani's room and the second time they are interrupted by Nobu and Nakao while the two are on the bridge after Otani found out he passed his exam.]]
%%** [[spoiler:Koizumi and Kohori]]
* {{Angrish}}: Koizumi slips into this occasionally, when she gets irritated mostly by Otani's comments.
* AttentionDeficitOohShiny: Otani and Koizumi can instantly drop angst, romance, or anything they were doing at the moment they see swimming pools, rickshaws, or Umibouzu.
* AwLookTheyReallyDoLoveEachOther: Despite their tendency to disagree and fight with each other, Otani and Koizumi like each other's company and [[spoiler:eventually they get together as a couple.]]
* BeautyBrainsAndBrawn: Koizumi's group of friends. Nobuko represents the Beauty as she is TheFashionista; Chiharu is the Brains, since she is smart compared to her friends; and Koizumi is the Brawn, mostly because she is is very hotblooded and a FieryRedhead.
%%* BetaCouple: The matchmaker friends.
* BewareTheNiceOnes: Suzuki fails to get into the same college as (sweet, meek, quiet) Chiharu, and seriously considers breaking up with her because he feels insufficient as a boyfriend. When she finds out, ''she picks up a desk and throws it, just barely missing him''. She remains angry enough for a while to involuntarily tear magazines in half whenever she remembers it, too.
* BigLittleBrother: Koizumi's younger brother is significantly taller than her.
%%* {{Bishonen}}: Suzuki, Otani, Haruka, Kohori, but especially Maitake and Seiko.
%%* BishieSparkle: Maitake's "magic".
%%* BlondeBrunetteRedhead: Nobu (blonde), Chiharu (brunette), and Koizumi (redhead).
%%** Suzuki (blond), Nakao (brown hair), and Otani (redhead).
* BokeAndTsukkomiRoutine: A lot of the humor in the show follows this pattern. Otani and Koizumi are mostly known in their class as a manzai duo (the "All Hanshin-Kyoujin") because they always argue and point out their respective idiocies, even in front of the class. Frequently, Otani acts more like the Boke, with Koizumi as the Tsukkomi.
* [[BreakHisHeartToSaveHim Break Her Heart to Save Her]]: A variation; Nakao doesn't want Nobu to feel guilty about [[spoiler:leaving him to go take care of her grandma in Hokkaido while attending university up there]], so he tries to get her to hate him. The plan he comes up with is completely ridiculous and hilarious. It also doesn't work, though that's obviously for the better.
%%* ButtMonkey: Poor Kohori
* CaughtOnTheJumbotron: Two characters get caught having a heart-to-heart discussion about their relationship.
%%* ClassTrip: with a very central role to the plot
* ComicallyMissingThePoint: Happens ''far'' too often with Otani, since he is ''very'' ObliviousToLove.
* CompressedAdaptation: The anime series compressed all of the manga up until after Otani's entrance exam into 24 episodes, leaving out or changing some events that happened in the manga. Fortunately, with all the changes and the pace between episodes, it doesn't affect the story too much.
* CornerOfWoe: Haruka is a frequent occupant when Koizumi rejects him or puts him down.
* CreatorCameo: The stylist who works with Mimi and helps Koizumi dress up in the final episode is called Nakahara, after Aya Nakahara, the series' author.
* DynamicEntry: Nobu frequently does this to Koizumi, usually involving a knee to the ''kidneys''. Ouch.
* EarnYourHappyEnding: Koizumi has to do this over, AND over, AND over, AND over again until things go right.
* EffortlessAmazonianLift: Carrying a guy who struggles to escape to a changing room? Not a problem for Koizumi.
* {{Engrish}}: A few characters speak it constantly.
** Otani has a big EpicFail moment when he said he and Koizumi were finished "folever".
* FallingInLoveMontage: There's a moment where Koizumi [[ImagineSpot imagines]] this would've happened, had she and Otani been of "normal" height.
%%* ForcefulKiss: Koizumi does this to Otani. And Otani does this to Koizumi when confessing to her.
* FunTShirt: In the prequel[=/=]WhereAreTheyNow collection of stories called ''Love Com D'', Yoshi is seen wearing a shirt with a very interesting NSFW phrase on it. Needless to say, it was removed by Viz for English-speaking readers.
* [[GaussianGirl Gaussian Man]]: [[HotTeacher Maity]], when introduced in the anime.
* GetAholdOfYourselfMan: Koizumi's famous [[MegatonPunch "Ahou Punch"]] that she delivers to Otani when he's feeling depressed.
* GratuitousEnglish: Once Otani proclaims that he [[spoiler:is breaking with Koizumi, he punctuates that it's ''FOLEVER''.]]
* GreenEyedEpiphany:
** Koizumi's not actually going out with someone else but [[spoiler: Maity-sensei takes it upon himself to make Otani jealous, getting him to ''finally'' realize he likes Koizumi. It's the OperationJealousy variation. Though in a twist of it, it is the rival and not the object of affection implanting it.]]
** Similarly, after [[spoiler: Seiko starts flirting with Otani, Koizumi starts getting jealous as well, which leads her to start admitting she likes Otani.]]
* HeadbuttOfLove: Koizumi and Otani do this after Otani [[spoiler: passes his entrance exam]].
* HeightAngst: A large part of the series focus on the fact that Otani and Koizumi suffer (especially on the romance aspect of their lives), because of their respective heights (as Otani is much shorter than the average Japanese man, and Koizumi is much taller than the average Japanese woman). That's part of the reason why they get along very well, and why several characters think [[ShipperOnDeck they are fit for each other]].
%%* ImagineSpot: Used to great effect in the anime.
* InnocentlyInsensitive: Chiharu and Suzuki to Otani and Koizumi. They both start talking about how comfortable they are with the main characters, but they accidentally offend them. They both state that since Otani and Koizumi are about the same height as their RomanticFalseLead, they don't see them as a boy or a girl, respectively. These comments almost cause them to get a HeroicBSOD.
* InsultOfEndearment: [[HugeSchoolgirl Koizumi]] and [[TheNapoleon Otani]] refer to each other as "midget" and "amazon", or "totem pole" respectively. Later, after the [[spoiler:RelationshipUpgrade]], they still occasionally call each other this, though in a considerably softer manner than before.
* IronicName: This gets lampshaded a few times since it applies to Koizumi and Otani. "Koizumi" means "Little Spring" (when she is actually taller), and "Otani" means "Big Valley" (when he is actually short).
* InstantFanClub: Koizumi starts one for [[HotTeacher Maitake]] as soon as he comes to the school.
* IWantMyBelovedToBeHappy: Abe is in love with Kohori, who is (in turn) in love with Koizumi. Rather than being happy that her rival is preoccupied with Otani, Abe tries to convince Koizumi to date Kohori [[spoiler:by trying to start a fight so that she'll break up with Otani and be free.]]
* JerkAss: Koizumi's grandfather, "Jii-chan," who gives Otani nothing but hell from the second the two meet, to the point of [[spoiler:arranging for a vicious gold-digger to seduce Otani away from Koizumi and break them up. She hits the wrong target, but the fact that he tried is bad enough]]. Possibly upgrades to JerkWithAHeartOfGold when he reveals [[spoiler:that his late wife was even taller than him, and the height disparity caused their relationship a lot of trouble, so he doesn't want to see the same thing happen to Koizumi]]. Possibly.
* KansaiRegionalAccent: It's noticeable that the series not only plays the dialect completely straight (as an aspect of the region rather than the characters in general, since they all live in Osaka), but that it also plays the [[TheIdiotFromOsaka character trope]] completely to the hilt. Aside from the "manzai duo" that the main couple are seen as by their peers, they go to ''Maido'' Academy.
%%* KaraokeBox
%%* {{Kimodameshi}}
* LeaningOnTheFourthWall: Generally, the narration boxes in the manga belong solely to Koizumi's thoughts. However, once in a while, some pop up that seem to belong to Otani... except the "camera" then pulls back to reveal that one of their friends is holding up a sign and a marker.
-->'''Otani''': What are you doing?
-->'''Nakao''': (''holding up a marker and a sign next to Otani's head that says "I'm sorry for being mean to you."'') Your true feelings.
%%* LoveDodecahedron
* LuckyCharmsTitle: The series is officially titled as "Lovely★Complex" or "Love★Com".
* MatchmakerCrush: The "matchmaker" part takes place in the first episode when both of them trying to fix each other up with two of their friends (said friends end up together at the end of the episode). The crush part comes later.
* TheMatchmaker: Everyone for Koizumi and Otani, but especially Nobuko.
* MistakenForCheating: [[spoiler:Koizumi, during several events involving her coworker, Kohori. Later thought of Otani when he spends the night with a gold digger.]]
%%* NoodlePeople: Even Otani looks noodly sometimes.
* {{Nosebleed}}: Compared to his manga and anime [[TheStoic counterpart]], Suzuki easily nosebleeds each time Chiharu provokes him with ''erotic'' thoughts, in the live-action movie.
* NotWhatItLooksLike:
** [[spoiler:Otani and Koizumi's first "kiss" was a result of him passing out and falling in front of her face.]]
** Otani coincidentally spotting [[spoiler:Kohori attempting to kiss Koizumi in her sleep.]] It's one of the first events to ''seriously'' test their relationship.
* ObliviousToLove: It's truly frightening how hard Otani has to be clubbed across the head with Koizumi's interest. She confesses to him, and he thinks it's a joke. A friend says that, yes, she ''really'' meant it, when he responds with "Don't lie." When he wants to know how the guy she loves is like, she describes him perfectly, and [[ObliviousToHisOwnDescription he guesses she means another member of the basketball club]]. [[spoiler:It takes her repeating that description and saying, "He's in here," when they're both in a room ''alone together'', and he still doesn't get it until he's had a good long think about what she's said.]]
* OneHeadTaller: Koizumi and Otani. Though in this case, it's the girl who's taller.
* TheReasonYouSuckSpeech: Koizumi deals those to both Otani and [[spoiler: Mimi.]]
* RomanticFalseLead: Chiharu for Otani and Suzuki for Koizumi.
%%* SchoolFestival
* SecondYearProtagonist: The series starts with Koizumi and Otani being in their second year of high school. Not long after, they must deal with their future studies.
* SexyManInstantHarem: Maitake, who looks like he comes straight from an [[RomanceGame otome game]] as the main character's love interest. Naturally, he becomes the crush of many of his students, Koizumi included.
* SheIsNotMyGirlfriend: Both Otani and Koizumi constantly remind that they are not in a relationship to their peers, [[spoiler: even ''after'' the former has kissed her of his own accord. And after they get the RelationshipUpgrade, when Koizumi is asked if Otani is her boyfriend, she says he isn't, ''because he didn't say they were a couple!'']]
* ShipSinking: Done quite literally in the first episode with Koizumi's and Otani's crushes.
* ShoujoDemographic: Though the series tends to make fun of itself more often than most.
%%* SickEpisode: Otani gets sick, Koizumi helps him out.
%%* SickeninglySweethearts: Nakao and Ishihara.
* SirSwearsALot: Koizumi has a pretty foul mouth at times, at least to the extent that the manga can get away with.
--> '''Koizumi''': ''Big or small, as long as you have a *** you're a man, right?''
--> '''Otani''': ''Girls shouldn't say that word...''
--> '''Koizumi''': ''Shut up!''
* SlapSlapKiss:
** Otani and Koizumi's relationship goes straightly like this ([[spoiler:even in their RelationshipUpgrade]]), thanks to their respective {{Tsundere}} tendencies.
** [[spoiler:Maity's fiancee, Jody]] and her father take the cake for this one. They beat each other senseless right before her wedding, as he didn't approve of the man she chose, but treat it as a perfectly normal occurrence and take it more as an expression of their deep love.
* SleepCute: The night before Otani's college entrance exams, everyone in his house comes down with the flu. To avoid catching it himself, Otani spends the night at Koizumi's house. He falls asleep studying, and when Koizumi goes in her room to check on him, she falls asleep next to him.
* StaringKid: Otani attracts a crowd of them after making a scene during the BeachEpisode.
* StringyHairedGhostGirl: Koizumi plays one in the haunted house during the culture festival, and becomes incredibly good at it (due to channeling her resentment at Otani), that nobody wants to come unless she's there.
* ThereIsOnlyOneBed: At Maity's wedding, Otani and Koizumi are given a room with a double bed to share. This causes Koizumi a significant amount of angst, though Otani eventually decides to sleep down the hall.
* TinyGuyHugeGirl: Much to both Koizumi and Otani's irritation. One interesting twist is that short Otani is an athletic basketball player (and later team captain), while tall Koizumi is rather gangly and awkward, and not very good at sports.
* TotallyRadical: The official English translation of the manga by Creator/VizMedia includes copious amounts of the word "dude".
* {{Transgender}}: [[spoiler:Seiko]] is an ''epic'' version of this trope. Notable in that all the characters are very unbothered by it, after the initial surprise.
* {{Tsundere}}: Koizumi and Otani for each other. HilarityEnsues.
* UnlimitedWardrobe: In the manga, at least, everyone seems to have a new outfit each day. Even in school, where you'd be expecting the usual [[SchoolUniformsAreTheNewBlack Japanese high school uniform]]. Koizumi also has quite a few unique hairstyles.
* UnluckyChildhoodFriend: Haruka. He frequently sulks about it.
* UnrequitedLoveSwitcheroo: Played with, as [[spoiler: Otani starts realizing he has feelings for Koizumi just when she's deciding to give up on him for the last time.]]
* ViewersAreGoldfish: The anime suffers from this a lot. In episode 13, for example, when Koizumi goes to Otani's house when he's sick, [[spoiler:his fever spikes and he passes out, falling on her face and accidentally kissing her.]] Twenty seconds later, she has a flashback about what just happened.
* VitriolicBestBuds: Koizumi and Otani, ''so much'', before either even begins [[AwLookTheyReallyDoLoveEachOther thinking of the other as potentially date-worthy.]] They fit every single aspect of this trope, up to Otani freaking out because Koizumi thanked him for a drink instead of snarking back at him.
%%** Haruka and Seiko probably also qualify.
* VocalDissonance: When [[spoiler:Seiko]]'s voice changes at the end of her second year, she becomes despondent and refuses to wear girls' clothes because her new deep voice doesn't match with a cute appearance. [[spoiler:Lucky for her, it was just a cold and her voice went back to its usual higher tone.]]
* [[WhenSheSmiles When He Smiles]]: When Chiharu promises Suzuki that she'll wait for him ([[spoiler:to enter the same university as her]]), the latter smiles. Everyone (except Chiharu) remarks how they've never seen him smile before, especially in such an adorable manner.
* YourSizeMayVary: Though their stated heights ''should'' result in Koizumi being consistently OneHeadTaller than Otani, especially given that she often wears small heels (despite complaining about her height), he's often drawn to be at least as tall as her nose, sometimes with the top of his head level with her eyes, even though he's not wearing elevator shoes. The only time their heights are truly as exaggerated as they should be is when it would be conveniently [[RuleOfFunny hilarious]] or relevant to the plot - for example, Otani needing to stand a step or two higher on a staircase in order to [[spoiler:kiss Koizumi.]]