* AlternativeCharacterInterpretation:
** Did Tamaki create the Host Club merely for the fun of it and in order to show off his good looks, or did he do it out of loneliness due to his background in order to gather "family members" he himself fancied, with the excuse of wanting to entertain ladies? Or maybe he did it for the others? He looked at the states of his colleague's lives (the family-pressured Kyoya, the antisocial twins, etc.) and decided that they needed the "club family atmosphere" more than he did.
** Haruhi [[spoiler:falling for Tamaki. Did it symbolize her CharacterDevelopment into a more caring, outgoing person, learning to love Tamaki for who he was rather than just be annoyed at his quirks, or was she regressed into a stereotypical shoujo heroine whose only purpose is to fall for the main male lead and blush like a maniac around him, taking away her indifferent streak that made her so interesting in the first place? The believers of the latter seems to be a minority however, and Haruhi did more or less return to her old self after calming down from her realization, keeping her snarkiness and ability to handle Tamaki just fine next to having romantic feelings.]]
** Did Kyoya genuinely [[spoiler: try to rape Haruhi, but was talked out of it]], or was it just a test like Haruhi theorized?
** There are some fans (mostly a [[YuriFan certain type of fan]]) who believe that [[spoiler:Renge might at least subconsciously have known Haruhi's secret]].
** Did Hikaru actually like/love Haruhi? Or was he just emotionally attached to the one person that could tell him apart from his brother? It's a bit more on the former side in the manga.
* AngstWhatAngst:
** [[spoiler:Hikaru appears to get over his feelings for Haruhi ''really'' fast, going from nearly crying at the knowledge that he lost, to having no qualms about secretly following her and Tamaki on their date along with the rest of the club just a few days later. Though it might have been to symbolize how much he had grown and thus were capable of keeping his emotions in check, or he had been processing in getting over his feelings for a while.]]
** In-universe: when Haruhi [[spoiler:finds out about Tamaki's past]] she's impressed with how one wouldn't be able to tell by his attitude.
* BaseBreaker:
** Renge, who is either really funny or really annoying depending on who you talk to.
** Haruhi. Fans will either find her apathy and snarkiness around shoujo males whom the heroine usually blushes around 24/7 to be refreshing and serving as a better "role model" for the average teenage viewer/reader, or make her bland and contributing little to the plot other than to be a generic snarker, and find her being an oblivious DudeMagnet for no other apparent reason but that she's [[InformedAttractiveness "cute!!!"]] to be obnoxious. It also got turned around later in the manga when she realized that [[spoiler:she'd fallen for Tamaki; fans who didn't find her smitten attitude around him to be hilarious believed that she had turned into exactly the stereotypical heroine they had loved her for not being. Even as she more or less returned to her old self after calming down from her initial reaction, it still didn't keep the fans who had expected her to be a unique heroine who didn't have to end up with the male protagonist from leaving and never coming back.]]
** Tamaki is debatably the most popular character in the series, but there are also those who just finds him annoying.
* BigLippedAlligatorMoment: In one episode there's a scene where the twins are lying in bed in front of their maids. One of them pulls off the covers and reveals he's wearing a colorful elephant head on his crotch, that blasts confetti into the air. This is not given any lines, and it goes onto the next scene quickly afterwards, with this never being explained or mentioned again, except for a brief moment that implies that they plan on doing it again. (The elephant head is a common way to censor out nudity, so that's probably what that was.)
* BizarroEpisode: There ''was'' the random episode that was a parody of ''Literature/AlicesAdventuresInWonderland'' featuring random single-episode characters from throughout the first season showing up again... [[spoiler: In the anime, the end is a TearJerker: the whole thing is a dream of Haruhi's, and the one playing the Queen of Hearts is actually her MissingMom Kotoko.]]
* BrokenBase: The English dub: love it or hate it.
* CrossesTheLineTwice: The twins' antics are sometimes seen as this.
* CrowningMusicOfAwesome: Don't deny how cool the ending song is for a shoujo anime. The extended version used in the finale is even better.
* DieForOurShip:
** Eclair, in the anime. As she's really the only actual roadblock between the OfficialCouple, she's pelted with this a lot.
** In the manga, [[KissingCousins HoneyxMori]] fans wish Honey's prospect girlfriend [[PerkyGoth Reiko]] a horrible demise, or just pretend she doesn't exist.
* EarWorm: The title theme, "Sakura Kiss". Just try getting "Kiss, kiss, fall in love!" Out of your head.
* EnsembleDarkhorse:
** Who ''doesn't'' love Nekozawa?
** Haruhi's father's friend Misuzu is extremely popular, the few times he does appear.
* FanPreferredCouple:
** In spite of the OfficialCouple, there are many Hikaru/Haruhi shippers.
** There are almost as many people who ship Kyoya/Haruhi as there are [=HikaHaru=] shippers- if not more.
** Kyoya/Tamaki shippers.
* GirlShowGhetto: Averted. Despite being aimed at a female audience, many guys enjoyed watching the show, mostly because of the light-hearted humor and the constant self-parody of {{Shoujo}} clichés.
* GrowingTheBeard: The series starts out as mostly a comedy and (as mentioned above) AffectionateParody of the standard shoujo clichès, with the occasional yet brief serious or heartwarming moments, but becomes deeper and more serious the longer it goes on, revealing hidden depths within many of the Host Club members along with other characters such as their families, and testing of how strong their bonds truly are (specially in the manga, though some of it in the anime too).
* HarsherInHindsight: An in-universe example: in Episode 14 of the anime, Akira Komatsuzawa, the newspaper president, becomes obsessed with the thought that Tamaki can't be such a perfect NiceGuy as he appears to be, and there must be something evil or scandal-like to him, or even if there isn't, he'll ''make'' something up. In the end he's thwarted by the rest of the Host Club, and Haruhi's left with her doubts that there would be anything bad to find about Tamaki. [[spoiler:Come the last two episodes of the anime (or Chapters 25-26 of the manga) she (and the audience) learns how Tamaki ''does'' have a sad and scandal-worthy past. The short version is that he's a mistress' child, and he's forbidden from seeing his mother ever again by his EvilMatriarch grandmother. Towards the end of the manga however, it turns out that their customers knew about this, due to always wanting to check out the background of their favorite hosts, and because of Tamaki's kind and cheerful self they were fine with it.]]
* HilariousInHindsight:
** That episode where a boy thought Haruhi was a cross-dresser. Then we meet her father.
** The creator early on in the series said she couldn't see Haruhi getting together with Tamaki. ''Guess how it ends''.
** Creator/MaayaSakamoto (Haruhi) and Creator/KenichiSuzumura (Hikaru in the anime and Kaoru in the drama [=CD=]) (as of August 2011) got married. This way, the Hitachiin twins/Haruhi {{OT3}} ''became real''.
** Haruhi is an awful actor and her music grades are apparently no better. Her japanese voice actress is a famous singer.
** The fact that Haruhi [[spoiler:falling for Tamaki can be applied to TruthInTelevision: it's proven that people have a tendency to unknowingly fall for someone reminding them of their parents.]]
* HoYay: [[HoYay/OuranHighSchoolHostClub Has its own page]].
* LauncherOfAThousandShips: Haruhi is [[OfficialCouple officially]] dating [[spoiler:Tamaki]] but she is often shipped with everyone else! Yes, [[LesYay even Renge]].
* MagnificentBastard: Kyoya, Tamaki, the Twins, and the Zuka Club all have their moments.
* {{Moe}}:
** Honey. He's short, sweet, gives others cute nicknames and carries around a rabbit plushie.
** Usually whenever someone says "moe" in-universe ("someone" meaning Renge), they actually mean "HoYay".
* MemeticMutation: Every time someone in a book/tv show/movie breaks a vase or something of the like, at least one person in the fandom will cry "KISS KISS FALL IN LOVE!"
* {{OT3}}:
** Try [=OT=]''7''. It's like a fangirl's dream come true.
** Haruhi paired up with the Twins is a fairly popular OT3 among fans of this series.
** Those who can't decide whether Tamaki should be with Haruhi or Kyoya often combine the two ships.
* PeripheryDemographic: There are a surprising amount of male fans. The fact that it [[AffectionateParody pokes fun at]] a genre that males might find ridiculous is a key factor. Although the guys don't swoon over most of the Host Club members, Haruhi is [[{{Moe}} so cute!]] Plus it's [[RuleOfFunny just plain funny]].
* SignatureScene:
** Haruhi breaking the expensive vase.
** The music room doors opening with rose petals flowing out from behind them.
** [[FanNickname The Merit Scene]].
** Any scene of Hikaru and Kaoru flirting with each other.
* ValuesDissonance:
** Tamaki's scolding of Haruhi for trying to protect customers from a pair of drunkards, which seemed to boil down to "Girls are too weak to fight boys!" rather than "A small person shouldn't take on two brutes." Although, the Host Club points out that their main concern was her attempt at taking them on alone when she could have called for help, which needlessly put her in danger, and she really had no fighting skills to begin with anyway.
** There's Kyoya's famous threat of rape of Haruhi later the same episode, which is quickly shrugged off by the characters and narrative in whole, being treated as acceptable because he was "pretending in order to teach her a lesson" and Haruhi, at the very least, doesn't believe he has any intention of following through.
** Western fans have a harder time swallowing the obsession with characters like Honey or Shiro, whose admirers specifically like that they appear to be, or actually are, a pre-pubescent child and act like one.
* VisualEffectsOfAwesome: The show-stopping anime intro is ripe of this trope.
* WhatMeasureIsANonBadass: Self-projecting fangirls hailed Haruhi as [[GirlsNeedRoleModels "a good female character UNLIEK THE GIRLY AND LOVESICK WHORES"]]. When Haruhi ''dared'' acknowledge her feelings for Tamaki and acted more emotional for a while, the fangirls threw the character under the bus "BECAUSE SHE'S LIKE THE ~OTHER GIRLS~, EW".
* TheWoobie: Each of the main characters has had at least one Woobie moment, especially in the case of Tamaki.
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