You're certain to find Tsundere characters in fan fiction, since most of them are written by a bunch of perverted otaku who use it to act out their sick fantasies with their creepy fan-crushes. And by that, I meant you, idiot!
- When dealing with romances between a protagonist and an attractive antagonist in fan fictions the difficulty of the antagonist having a highly abrasive personality often arises. Transforming the antagonist into a tsundere and setting their attraction on the protagonist allows for character development and easier movement away from "evil".
- It's also common for characters who hate each other and/or are sworn enemies in canon to be portrayed as this by fanfic writers who want to hook them up together but also want to make the pairing at least marginally more plausible than the alternative of completely ignoring their canon hatred of each other, portraying them as only thinking or acting like they hate each other because they can't/won't admit that they actually love each other. Also see Foe Yay Shipping and Belligerent Sexual Tension.
- Often seen in the much beloved fanon ship between Katara and Zuko in fandom.
- Male example in Axis Powers Hetalia fanfic Gankona, Unnachgiebig, Unità: Like in canon, although Germany yells at Italy at a constant basis and is strict towards him, Germany is also is kind and gentle towards him as well.
- Firefly from Ace Combat: The Equestrian War is a mild case of this.
- Tatl Beryllia in The Blue Blur of Termina. She regularly switches between belitting and snarking at him, and being surprisingly cool with him, to the point of lightly flirting with him at times.
- In Cardcaptor Rad, Alexis is Type A, while her cousin serves as her Type B counterpart.
- Last Child of Krypton: Asuka hides her vulnerable side underneath a harsh outward shell because she does not want to be hurt again. Shinji realizes she is a better person than everyone -including her- credits her for, and after getting together she dares to show her softer side more openly.
- The Dragonborn in the Crossover fic, Portalborn is a prime example. She's mostly tsuntsun to nearly everyone and sometimes deredere with Farkas. The conflict she has with Doug Rattmann is more tsun and rarely dere, but he's normally just too scared to do anything about it anyway. He gets a little bit braver in more recent chapters and is stated by some characters to be in love with her. Judging by the Dragonborn's confused thoughts, it's probably mutual.
- Superwomen of Eva 2: Lone Heir of Krypton: Since she was a kid Asuka fabricated a mask of a tough, self-reliant girl did not need anybody so nobody realized she was very vulnerable deep-down and hurt her. However, when she rooms with Shinji she starts trusting him and showing him her softer, nicer side gradually.
- In Thousand Shinji, Asuka behaved like an angry, rude child to hide her frightened, sad true self. However, Shinji reached out to her and suggested her saving her rage for the Angels. From that point on, Asuka started opening up to him, and showing her softer side openly.
- The Terminators: Army of Legend has Kira, a harpy from the matriarchal Avione tribe, to Alex, the human protagonist. Initially she is very hostile to him, to the point of relentless bullying and abuse, but slowly starts to fall for him, even if she won't admit it. Justified, since her sister (whom she was close to) fell for a human, was betrayed, and subsequently killed by said human.
- In A Charmed Life Light is a harsh tsundere towards Ryuk who he frequently insults and calls him an idiot right before agreeing to move in with him. Light is a bit of a tsundere for L as well though he would never admit it.
- In the Slash Fic A Cure for Love Light claims not to miss L at all and if he takes time out of his busy schedule of ruling the world to search for him well obviously he's not doing it for L, it's just because he lent him his crappy CD player and he wants it back.
- Light Yagami in The Prince Of Death is very Harsh. He is very arrogant and hostile to everyone else but shows a softer side to his little sister and to L-and while he keeps insisting to L "I'm not doing this for you!" he gets very jealous of L's attention. He slowly begins defrosting when he notices that for some reason that he has yet to fathom L is being nicer to him this time around.
- In the Slash Fic To Feel Alive Light is a one for Ryuk. He truly does enjoy Ryuk's company even though Light is stuck up, frequently insults him, and at one point hits him with a wet towel.
- Rika is a Harsh Tsundere towards Takato in the Tamers Forever Series
- Karrin Murphy is a Tsundere in canon, and the Lemon fic Chivalradar shows her acting like this during sex. Hilarity Ensues."Dresden.""What?!""You did it again.""All I did was kiss you!""I told you, this is my show. Lie back and relax, dammit!"
- In Never Had A Friend Like Me, Norm is a platonic Harsh towards Amanda. She's just about the only one he shows his dere side to and in the beginning he often went on long mental tangents justifying to himself on how he's only spending time with her because she's an interesting hobby and most definitely not because he actually cares about her in any way shape or form.
- There are countless fanfictions where it is revealed that Draco is this to Hermione.
- Tisiphone Gibbs, from the fic The Ollivander Children, comes off as quite harsh and even rude to others, but is noticeably sweeter to her little brother, Hector.
- Smoker from Respect a Woman, a Left 4 Dead fanfic/comic/project that follows the relationship of two women before the infection breaks out. Hunter even invokes the trope by name. In reality, both of them are "soon dairys" in the sense that they're constantly ribbing each other while refusing to talk about their feelings openly. But they do have some "dere" moments.
- This Metalocalypse Slash Fic explores, among other things, how William Murderface's canonical Harsh Tsundere tendencies might express themselves in a romantic relationship.Murderface was strange. Toki knew. He was unstable, and needy, and seeking approval at all times, while at the same time hating himself for everything that he did. He couldn’t exist happily on his own, even though that was what he longed to do. Half of the time, he couldn’t even understand what it was that he wanted. He hurt himself out of frustration. He tried to hurt others out of anger. But he couldn’t hurt Toki. Not anymore. Not when he quietly invited Toki in to sit on his bed. Or when they stared at each other at dinner. Or when Toki softened him, slowly, gently, and they lay together in bed, asleep or awake, alone. Then, Toki was invincible. Then, Toki could brave the thorns around that tiny, warm heart that beat at the same pace as any other human being’s. That tiny heart that Murderface had wanted to give to him, because he was the only other person that had ever managed to touch it.
- Rainbow Dash is frequently depicted as such in Ship Fics, due to her attitude in the show towards being mushy.
- In Spring is Dumb, Rainbow Dash, who has brought an early spring to Ponyville this year as a birthday present for Rarity, is upset because she got in a fight with Rarity, and now she totally isn't collecting gifts for Rarity in apology. Really.
- A Crown of Stars: After what she had endured in canon and the prior story Asuka had become more jaded, more embittered and more frightened than never to trust people, open up and become vulnerable. She was so burnt-out that she did not want to love anyone because she was too broken up inside and hurt to let anyone in and she didn't even feel worth being loved. Thanks to time, therapy, and support she got better and she and Shinji got together, but she still had a hard time to express her feelings openly.
- Advice and Trust: Rei of all girls towards Kaworu. This is partly because she's biologically compelled to feel oppressed by his very existence, but as the author has pointed out, Asuka was the closest thing she had to an example of normal teenager behavior until very recently. This led to the birth of the Fan Nickname "TsundeRei".
- The Child of Love: Due to their parents leaving her and her mother dying, Asuka dons a mask of harshness and arrogance to push people away so that they don’t hurt her. She likes Shinji but precisely for this (and because she doesn't think he likes her back) she pushes him away harder, even though he is the only person can understand her. At the beginning of the story she pushes him away harder because she is afraid of him, but her pregnancy gradually brings her softer side out.Asuka:"You're really an idiot sometimes, but when you want, you can be a really good friend..." (grinning now:) "...and a great lover."
Shinji (grinning):"You too. Sometimes you can be a real pain, and then suddenly, you're so nice..."
- Evangelion 303: Asuka prided on being the best and not relying on anybody. However when Shinji arrived and beat her she started to get drawn to him. She did not want to admit that she was falling for someone but she could not hold her feelings back, and she was falling apart due to her inner tensions until she accepted her feelings and they got together. She still needed a long time to admit to herself and him that she genuinely loved him.
- Ghosts of Evangelion: Asuka fabricated an angry, mean personality in order to push people away and hide her fragile, frightened self. She also tends to get mean when she's nervous, upset and scared."Do you want me to help you?" she asked. Her voice had a nervous edge to it.
He stopped, then looked at her. "Why would you want to?" he asked. "You don't even like me."
She frowned. "That's not true," she said. "My mama asked me where I wanted to play, and I said here. I like being with you."
"But you're always mean to me," he said.
"That doesn't mean I don't like you," she said. "I'm just afraid you'll go away, and it makes me nervous and upset. So I get mean even though I don't want to."
- Neon Genesis Evangelion: Genocide: Asuka pretended to be arrogant in order to push everyone away and hide that she was a very vulnerable girl. After hooking up with Shinji her temper gets slowly better.
- ''Evil Anonymous'' is about Giovanni's struggle to escape from a facility whose staff claim to be in the business of rehabilitating villains. He ends up partnering with Cyrus, and they become pretty good teammates and near-friends. His thoughts betray his true feelings, and occasionally he'll slip up when he speaks, but the Rocket Boss swears repeatedly that he continues to put up with his counterpart only because he is a halfway-decent ally and no one else is going to bother to care about him. Meanwhile, he continues to yell at Cyrus and call him a robot.
- In Tales of Faith, there are several Oranyan/Tsunderes: First is Elazul. He's very harsh towards practically everyone he meets... except for his male closest friend, and later, a woman and then a child. Second is Cress. Her dere side appears mostly on her moments with her female friend, Heart. Heck, Alvin actually ships them just to get their reactions. Finally, Vanitas. She is very, very cold to everyone (especially Vanille), only Elazul can bring out her softer side.
- In Two Sides of a Coin, Kanril Eleya comes off as this. She's a Fiery Redhead at the best of times and here it's compounded by her confused feelings towards her ex-fiance, Jerrod Dalton. She punches him out on their first meeting, apparently for leaving her ("It's all right, Chief Howard! I deserved that.") and is pretty curt with him otherwise, while being dere towards her current boyfriend Reshek Gaarra. When he later is injured by a Romulan Boarding Party and subsequently dies of his wounds, she's sent into shock and spends some time drowning her sorrows, before delivering the eulogy at his funeral.
- Zara of Toy Hammer insists—quite loudly—that she's not one of these. "I am not a hormonal teenage girl with a crush she can't admit!" (From the looks of it, the only part of that sentence that's true is that she's not a teenager.)
- Erik Lehnsherr in the Daycare 'Verse, a Lighter and Fluffier X-Men: First Class AU, is the "standoffish and cranky" variety, although he shows a softer side to his boyfriend and the baby mutants. His boyfriend, by contrast, is a borderline Messiah.
- It's not uncommon to see fan works where Flowey gets this portrayal, especially in stories set after the events of the True Ending where Flowey still has fresh memories of being compassionate from back when he was Asriel. Incidentally, The Fallen Child, (aka Chara) has frequently been portrayed as one too.
- If a character is naturally shy in the original medium, it can be difficult to bring them into the spotlight in a fan-work. As a result, authors often give them buried tsun-tsun characteristics that emerge in response to a key point, giving the player a backbone and respect from others.
- The Axis Powers Hetalia fandom seems to love this trope:
- While Greece is normally portrayed as a sweet, laidback guy who's nice to everyone (especially to Japan, his most common love interest) and acts differently around Turkey only because of their long rivalry (and Turkey's interest in Japan just adding more fuel to the fire), it isn't too hard to see how that interpretation can be easily rewritten to make Greece into a Sweet tsundere who's friendly to everyone except the one he's actually secretly in love with. Some Turkey/Greece fanworks even essentially do away with Greece's 'default' Nice Guy state (or simply show him interacting only with Turkey and thus not having much of a chance to show his 'dere' side with others), turning him into an all-out Sweet tsundere. This can lead to quite a bit of Mood Whiplash while reading Greece fanfics, going from Greece/Japan fics where he doesn't display the faintest sign of tsun to Turkey/Greece fics where he goes violently tsun with physical blows and insults - yes, even the shipping itself is tsundere!
- Some fans see Japan as a Sweet tsundere toward his former adoptive brother China, as China appears to be the only nation Japan openly expresses annoyance or irritation around. Though considering that Japan once stabbed China In the Back, some other fans see Japan as fitting a different trope more in regards to him...
- Heck, even a few Greece/Japan fanworks depict Japan as a partial Sweet Tsundere toward Greece, getting along with him excellently until Greece goes into Chivalrous Pervert mode which leads to Mr. Spazzes-Out-At-A-Mere-Kiss-On-The-Cheek blushing furiously and denying just as furiously that he wants anything physical or outright shouting at Greece or shoving him away for daring to bring that topic up. (Good thing Greece is so persistent/patient with him, huh?) One doujinshi even had Japan deliver Amusing Injuries on Greece and give him the cold shoulder for a while after they ended up making out in an RPG (don't ask).
- China himself is sometimes depicted as a Sweet tsundere in Russia/China fanworks, usually being implied to have become one out of necessity of withstanding Russia's childishly sadistic side without breaking or showing vulnerability.
- Also happens in most China/South Korea fics, with China's outward annoyance toward Korea's antics being a cover for his deeper-seated feelings for him.
- Taiwan becomes a Tsundere when she's paired up either with the aforementioned Korea or Hong Kong.
- When not shown as an Comically Serious Sugar And Ice Guy, HK is often written/drawn as a Tsundere as well. Specially with Taiwan and Korea, too: he insults and snarks at them with a perfectly straight face, then blushes and mutters compliments when no one but Taiwan and/or Korea can hear him.
- Even more so with female Hong Kong, now that she has an official design◊. See this male!Taiwan x female!HK fanart◊ as an example.
- Also, when Hungary is paired up with either Turkey or Prussia instead of Austria, she becomes a pretty snippy and violent Tsundere towards them. Taken Up to Eleven if her beau is actually Romania.
- Speaking of Romania, several fics portray Bulgaria as Sweet towards him, in spite of their relationship being vastly different in canon.
- The British Isles (England, Scotland, Wales, etc.) tend to be written as an entire family of Tsunderes, to varying degrees.
- In the crossover fic Action Pack Naruto himself is portrayed as Sweet, while his brother is in a whole other category...
- Children of an Elder God: Due to have a better parental role model after being ditched by her father, Asuka's personality is softer. She still has a harsher, rougher, angrier side, but she displays her kinder self more easily, and her character gradually softens up after meeting Shinji.
- Beth Lestrade, in her original show, fits Harsh quite well. However, in Children of Time, she is solidly Sweet — justified in that she's several years younger than she is in the show, and she's not done yet developing as a person. She does her best to be a good friend to Sherlock Holmes, very much in love with him but convinced that he'll never return her feelings. However, after a day of very thorough abuse from him (betrayal of trust, handcuffs, insults), she starts lobbing insults back with precision and ends up slapping him when he crosses the line. She regrets it very quickly and kisses him on the abused cheek, and accepts his apology a few minutes later. She eventually earns her happy ending in the most traumatic way possible.
- In Some Semblance of Meaning, protagonist Vale Whitaker is generally kind-hearted and polite toward anyone else, but when it comes to Obsidian Citrine, everything he does initially seems to be a Berserk Button for her. However, as she comes to understand him better, she does soften up toward him. (It doesn't hurt that he saves her life a couple of times.)
- The already mentioned Iruka Umino of Naruto is often portrayed in a Sweet light when paired with Kakashi. (This seems to have something to do with his canonical tendency to blush easily and wicked temper.)
- Advice and Trust: Asuka becomes sweeter after fully committing herself to her relationship with Shinji, frequently fending off would-be suitors with a healthy amount of threatening gazes and verbal attacks.
- Doing It Right This Time: As per canon, Asuka used to hide her softer side behind a very harsh façade so that nobody hurt her. It really didn't help. Then she wakes up in Berlin three months before the Third Angel arrives and decides she's going to, in her own words, "use less tsun and more dere this time". She's had a few close calls but has yet to relapse. Shinji's Death Seeker tendencies don't help.
- HERZ: Due to her many emotional wounds and psychological scars Asuka was reluctant to open up. Rei warned her unless she managed to open her heart she would not find happiness. After Shinji’s suicide attempt she finally manages to open up and her temper softens.
- Higher Learning: Asuka showed her harsh side at the beginning to hide her vulnerable, fragile self. However Kaoru's lessons helped her to realize she did not need to be afraid and she did not have to push everyone away. After a while she starts showing her nicer side, especially after hooking up with Shinji.
- Once More with Feeling: After meeting Shinji, Asuka starts showing her softer side thanks to his influence. She still has a harsh side that she uses to protect herself, but she is less afraid of making friends or letting herself be vulnerable.
- The One I Love Is: Asuka hid her softer side under an intentionally harsh side because she was afraid of other people due to her childhood trauma. Thus, although she fell for Shinji, she was reluctant to show her feelings openly, restricting herself to drop hints he never got. When Rei started to pursue Shinji, though, she had no option but dropping her façade and displaying her feelings and her nicer side in plain, honest fashion.
- Pokémon Reset Bloodlines: In this story, Misty is more dere than tsun, at least when she's around Ash. This is mostly due to the fact that she had been mistreated by her family her entire life, and Ash is one of the first people to treat her with genuine kindness.
- Karasuba in Birds of a Feather is normally very affectionate towards Minato, often snuggling against him, sitting with his head in her lap, or sharing his bed (non-sexually), though every few days she'll leave for several hours at a time. She's also both territorial and addicted to bloodshed; those times she leaves him for hours are when her bloodlust becomes too great and she has to resist the urge to kill him.
"Anime/Cuticle Detective Inaba"
- Chikane Ogino in [[Cuticle Detective Inaba(revised)]] is very kind and caring towards other people, however she has a short temper and will often lash out violently, mostly towards her love interest, Hiroshi Inaba. She is, at times, annoyed with his brother and sister complex and his slight pervertedness towards her. However, she has her moments where she is flustered and shy towards him, mostly when he compliments her. She also cares for his safety and does not like to see him sad. Chikane loves Hiroshi very much and sometimes tries to think of ways to confess her feelings.
- In Ragnarok: Ragna Guardian, Saya can be like this to series protagonist Shiro. She likes him because he was nice to her, but she cannot bring herself to confess, sometimes coming off as this.Saya (upon taking the time to bake cookies for Shiro and give them to him.): These are for you. But don't get the wrong idea. I only gave them to you because you looked hungry, and I felt sorry for you.
- Being the idiot he is, Shiro actually buys it.
- It's not uncommon to see fan works where Flowey is given this portrayal, especially when the stories in question take place after the True Ending where Flowey still has fresh memories of being compassionate as Asriel. Incidentally, The Fallen Child (aka Chara) has frequently been portrayed as one as well.
Back to Tsundere, weird fan!