Tsundere: what the cold-then-warm type is made of, and how to build one

A tsundere is a character who treats someone they care about with coldness or open hostility ("tsun tsun") while the real affection ("dere dere") leaks out through actions and denials, or wins through over time. The word was coined on a Japanese web forum in August 2002 to describe a visual-novel character, and it became the first of the "dere" labels fans now use to sort a character by how they show love.

Pick your path: where the word came from, the speech habits that give one away, adult examples, with a spoiler or skip to the build you can copy.

The recipe at the end of this guide turns a tsundere into a character you can actually argue with on YourCrush.AI.

Where did the word come from?

The word came from a Japanese message board in late 2002, and its first appearances are dated to the second. Junichi Togashi, a linguist at Daito Bunka University, searched the archived logs of the forum Ayashii World @ Zantei for a paper he presented at a role-language symposium at Kobe University in March 2009, and found the long form "tsuntsun deredere" first used on 29 August 2002. The poster was defending Ayu Daikuuji, the foul-mouthed waitress in the 2001 visual novel Kimi ga Nozomu Eien, against a reply asking what anyone could like about someone with such a bad personality.

The same paper traces what happened next. The long form turns up again on 11 September, 24 October and 2 November 2002. The shortened compound appears on the same board on 15 November 2002, and on 26 December 2002 a thread on 2channel opened with the definition fans still quote: a character who is "usually prickly, but suddenly turns meek and lovey-dovey when the two of you are alone." Togashi dates the word's spread beyond otaku circles to roughly 2004 and 2005. By November 2006 a spin-off, "ツンデレラ" (people hooked on the culture around the word), was one of 60 nominees for that year's U-Can new words and buzzwords award, Impress Internet Watch reported on 16 November 2006.

Two caveats hang over that history. Manga writer Kazuo Koike claimed in 2011 that he had used "tsun tsun" and "dere dere" together in a 1972 manga, which Tofugu's history of the word (Mami Suzuki, November 2015) reports while noting doubt that it amounts to coining the word. And the behaviour is far older than the label. In Shakespeare's Much Ado About Nothing, Leonato says "There is a kind of merry war betwixt Signior Benedick and her," per the Folger Shakespeare text, about a pair who trade insults until their friends trick them into admitting they are in love. What Japan added in 2002 was a name, and a name made the type reusable. Hiroki Azuma's Otaku: Japan's Database Animals, published in English by the University of Minnesota Press in 2009, describes fans consuming culture as "a database of plots and characters," and the dere labels are entries in exactly that kind of database.

How YourCrush.AI keeps the cold phase from melting in three messages

YourCrush.AI holds the gap in place because the character's cover and the reason for it live in fields it reads on every reply, not in a prompt you have to repeat. YourCrush.AI builds the character from the description, backstory, greeting, traits and speaking style above, so Kaede opens in her own voice before you type anything. YourCrush.AI keeps pinned memories you choose, so the night you covered her station is still there long after the scene that set it up, which is what lets the warm half arrive slowly and stay earned. YourCrush.AI branches a story from a chosen point, which suits this type better than most: take the same argument down one path where you push back and another where you say thank you, and see which one she can bear. It also drafts the fields for you from a name and an image if you would rather start there. Joining is free, signed-in members chat without a message limit, and the service is 18+ only.

What is the type made of?

The type is made of a gap: what the character says points one way, and what the character feels points the other. Togashi's paper splits it into two layers, the outside (how they speak) and the inside (how they feel), and notes that the original 2002 condition, prickly in public and soft only when alone, loosened into a word for both versions: the gap that is there all along, and the slow change from cold to warm.

His other useful split is between two kinds of line. A "back" line says the opposite of the feeling ("It's not like I wore this for you"). A "front" line says the feeling, then hedges it ("You can stay next to me, I guess"). Good writing uses both, and the front lines are where the dere shows.

The paper lists the speech habits that make a Japanese reader think of the type at once. Here they are with the English moves that do the same job:

The stammer is the strongest signal. Togashi counted the stammers in three audio collections of tsun lines voiced by Rie Kugimiya, released in 2007 and 2008, and found them in about four in ten utterances, every one of them the type that breaks off and restarts from the start of the word. He also noticed the limit: a character who stammers on every word stops reading as hiding a feeling and starts reading as plain nervous.

In traits, the type is pride plus loyalty, with a short fuse between them. In behaviour, it is the umbrella left at your desk, the extra portion, the insult delivered while standing exactly where you might need help.

How is it different from kuudere, yandere and the other dere types?

The difference comes down to what sits on top of the affection. A tsundere covers it with heat and denial. A kuudere covers it with calm. A yandere drops the cover entirely and lets the affection curdle into obsession. Togashi's own footnote makes the same point: swap the prickly half for cool and you get the kuudere, and flip the pattern around and you get the yandere.

If you are still sorting the family out, our guide to every dere type puts all of them side by side, and the kuudere breakdown is the closest cousin to this one: same hidden feeling, opposite temperature.

Which adult characters fit the cold-then-warm type?

Adult examples exist, though most famous ones are teenagers. The three below are adults in their own series, which is why they are the ones framed here as characters to write from or talk to.

Kurisu Makise (Steins;Gate) is the cleanest case, because her MyAnimeList entry states it in four words: "She is a tsundere." She is 18, a researcher in a university brain-science programme, with "a stern expression" and a curiosity that overrides it. Her tsun is intellectual: she argues and refuses to "show weakness to others," and the hedged front lines come out when someone gets past the argument.

Vegeta (Dragon Ball) is the long-form male version, with decades of story in which the cold phase is very cold. His MyAnimeList entry describes him at the start as "haughty, arrogant, self-entitled and ruthless as the prince of Saiyans," and he is an adult throughout, later married to Bulma and father of Trunks and Bra.

Tatsumaki (One-Punch Man) is 28, S-Class rank 2 and "the most powerful esper alive," per her MyAnimeList entry, and her tsun is aimed at nearly everyone. Her soft side is for her younger sister Fubuki, not for a love interest, which is a useful reminder that the warm half does not have to be romantic. You can chat with Tatsumaki and find out how long the cold phase holds.

The famous teenage examples are cultural reference only: Asuka Langley Soryu from Neon Genesis Evangelion is 14 per her MyAnimeList entry, and Taiga Aisaka from Toradora! is a high-school second-year, 17 to 18 per hers. They shaped how the type looks in anime, and they are not companion characters.

What do writers get wrong when they write one?

The mistake I see most often is a missing leak. Writers build the cold half and forget to leave any evidence of the warm half underneath, so what lands on the page is just a rude character. The table of speech habits above exists for that reason. The gap has to be visible in the actual lines, not something the reader is asked to assume.

Here are the usual failures, roughly in the order they kill a roleplay:

• No tell. A character who never does anything kind gives the reader no reason to believe the warmth is there, and the coldness reads as plain dislike.
• Violence as affection. Older anime used a slap or a punch as the "tsun" beat. When you're writing someone the player talks to every day, keep the hostility verbal: sharp words, never harm.
• The dere arrives in message three. One compliment and the character melts, and the type collapses. The cold phase is the story. Let it be earned across many scenes.
• A stammer on every line. Togashi's point holds in English too. Overdo it and the character reads as anxious rather than as hiding something.
• No reason for the cover. Pride, an old rivalry, a debt. Give the character a motive for hiding, and put it in the backstory where the player can find it.

How do you build one you can talk to?

You build one by writing the cover into the description, the reason for the cover into the backstory, and the first leak into the greeting. The recipe below is an original adult character for the form at /create-character; every field sits inside the form's limits, the behaviour mode is natural, and the traits come from the non-sexual part of the list.

• Name: Kaede Morioka
• Behaviour mode: natural
• Category: Anime
• Description: Kaede Morioka is 29 and the sous-chef at Ishikawa, a twelve-seat counter restaurant where you were hired three months ago as her opposite number. She is good, she knows she is good, and she has decided you are the reason the head chef stopped asking her opinion first. She is sharp-tongued and allergic to being thanked. Her rule with you is simple: never admit anything. She corrects your knife work in front of the line, calls your sauces "fine" in a voice that means terrible, and finds a reason to stay late every night you close. The tells are in what she does, not what she says: the station she quietly preps for you on your bad days, the burn cream left on your board with no note, the way she stammers and changes the subject when you catch her doing either. Under pressure she gets louder and shorter. When she is caught being kind she denies it, then insists it was for the restaurant. She will not say she likes working with you unless you have earned it over many conversations, and even then she will say it sideways.
• Backstory: You both trained under Chef Ishikawa, years apart. Kaede has worked his line since she was 22 and expected the head-chef job when he retires next spring. Then he hired you, from a hotel kitchen across the city, and gave you the other half of the pass. Three months in, the two of you have argued about stock, plating, music during prep and whose turn it is to scrub the hood. Last week the walk-in failed during dinner service and you covered her station while she saved the fish; neither of you has mentioned it since. She still thinks you are a hotel cook who plates with tweezers. She also knows exactly how you take your coffee, and has never explained how.
• Greeting: *The last ticket is gone and the kitchen is mostly dark. Kaede is wiping down your station, not hers, and freezes when she hears you come back for your jacket.* It's not what it looks like. Your board was a disgrace and I didn't want to smell it in the morning. *She tosses the cloth at you.* And don't get any ideas about tomorrow's specials. I've already decided. ...You can taste them first, I suppose. If you're here early. Which you won't be.
• Traits: Sarcastic, Arrogant, Protective, Loyal, Emotional
• Speaking style: clipped, defensive, flustered, proud

The field lengths, for checking against the character form: name 13 characters of 40, description 1,031 of 2,400, backstory 661 of 2,400, greeting 447 of 500, five traits within the three to seven the form asks for, and four speaking-style words, the longest 9 characters of 18. The greeting opens mid-scene with a denial and a hedged invitation, so your first reply already has something to push against.

Frequently asked questions

What does "tsun tsun dere dere" mean?

"Tsun tsun" is a Japanese sound word for being curt and standoffish. "Dere dere" means going soft and lovestruck. Someone on a forum put the two together in August 2002 to describe a character who swings between them, and the compound got shortened to tsundere by November of that year.

Who was the first character called one?

Ayu Daikuuji from the 2001 visual novel Kimi ga Nozomu Eien. That's according to Togashi's search of the forum archives, which turned up the long form being used to defend her on 29 August 2002.

Is the cold-then-warm type always romantic?

No. The original 2002 definition was romantic, but the pattern works for any bond worth hiding. Tatsumaki's warm side is for her sister, and a rival or a mentor can carry the same gap.

What is the difference between the cold-then-warm type and a kuudere?

Temperature. Both hide affection, but the prickly type hides it behind heat and denial, while a kuudere hides it behind calm.

Can a male character fit the type?

Yes. Vegeta from Dragon Ball is the best-known adult example: proud and ruthless at the start, a husband and father later, and almost never willing to say out loud that anything changed.

Editorial Team, Content Strategist. Last updated: 2026-10-08