It Was a Mistake, Grand Duke!
대공님, 실수였어요! | Daegongnim, Silsuyeosseoyo! | Daegongnim, Silsuyeoss-eoyo! | Grand Duke, It Was a Mistake! | Grand duc, c'était une erreur! | Grão duque, foi tudo um erro! | ¡Gran duque, todo fue un error! | Эрцгерцог, это была ошибка! | Повелитель, это была ошибка! | แกรนด์ดยุค มันเป็นความผิดพลาด! | お許しください、大公様! | !الدوق الأكبر ، لقد كان خطأ | 大公殿下,这是个误会 | 大公爵,我不是故意的! | Tuan duke, itu adalah kesalahan! | Đại công tước, đó chỉ là sai lầm! | Đại công tước ~ đó là một sai lầm! | Đại Công Tước, Đó Chỉ Là Sai Lầm! | Grand Duke, it was a mistake! | Daegongnim, silsu yeoss-eoyo! 대공님, 실수였어요! | Grand Duke, It Was A Mistake! | It Was a Mistake, Grand Duke! | ¡GRAN DUQUE, TODO FUE UN ERROR!
9.5(100 votes)
1.4K views
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Author:Updating
Status:Ongoing
Released:2021
Keywords:
It Was a Mistake, Grand Duke!It Was a Mistake, Grand Duke! ManhwaIt Was a Mistake, Grand Duke! RawRead It Was a Mistake, Grand Duke!It Was a Mistake, Grand Duke! ChaptersIt Was a Mistake, Grand Duke! EnglishIt Was a Mistake, Grand Duke! OnlineIt Was a Mistake, Grand Duke! Free대공님, 실수였어요!Daegongnim, Silsuyeosseoyo!Daegongnim, Silsuyeoss-eoyo!Grand Duke, It Was a Mistake!Grand duc, c'était une erreur!Grão duque, foi tudo um erro!¡Gran duque, todo fue un error!Эрцгерцог, это была ошибка!Повелитель, это была ошибка!แกรนด์ดยุค มันเป็นความผิดพลาด!お許しください、大公様!!الدوق الأكبر ، لقد كان خطأ大公殿下,这是个误会大公爵,我不是故意的!Tuan duke, itu adalah kesalahan!Đại công tước, đó chỉ là sai lầm!Đại công tước ~ đó là một sai lầm!Daegongnim, silsu yeoss-eoyo! 대공님, 실수였어요!AdaptationFull ColorMagicWeb ComicLong StripBased on a NovelBlue-Eyed Male LeadContractual RelationshipDuke Male LeadEngagementEuropean AmbienceFangirl/sFemale ProtagonistGreen-Eyed Female LeadKidnapping/sNobility/AristocracyObsessionYandereHeterosexualOtaku CulturePrimarily Adult CastWebtoon/Webcomic
Synopsis
I somehow kidnapped the Grand Duke I had a one-sided love for!
To hide this fact we had to pretend being in a relationship, but the Grand Duke is behaving strangely:
"Vivian, may I kiss you?"
Huh? Are we kissing as soon as we started dating?
"We'll kiss, then take take a step further and get married."
Is this relationship going to be alright?
---
Vivian Louis is the twenty-one-year-old daughter of a Count, a sweet and seemingly harmless girl who has only one guilty pleasure in life: thirsting after her crush, the breathtakingly handsome Grand Duke Lennox Elphidion Glenn! For her, it was love at first sight at the tender age of fourteen. That’s when she began obsessing over him, creating endless works of fan art and fan fiction. Then one day, an accident with her best friend’s magical crystal ball makes the unthinkable come true. The grand duke is kidnapped and tied up in her bed, and he’s telling her that she’s the kidnapper! Scrambling for a way out of this scandalous bind, the two agree to act like a couple. They even sign a one-year contract, but Lennox seems to want more than a fake relationship. Unbeknownst to Vivian, a full-blown romance is on its way. Could it be that her wildest fan fantasies will truly come to life?
---
**Original Novel:** [Naver Novel](https://novel.naver.com/webnovel/list?novelId=818598), [Naver Series](https://series.naver.com/novel/detail.series?productNo=4402562)
[Official English Translation of the Novel](https://yonderstory.com/titles/1114)
**Original Webtoon:** [Naver Series](https://series.naver.com/comic/detail.series?productNo=6529469), [Naver Webtoon](https://comic.naver.com/webtoon/list?titleId=784518)
**Official Translation:**
* [English](https://www.tappytoon.com/en/comics/it-was-a-mistake-grand-duke)
* [Chinese (Simplified) / 汉语](https://www.dongmanmanhua.cn/LOVE/dagongdianxiazheshigewuhui/list?title_no=2066)
* [Chinese (Traditional) / 漢語](https://www.webtoons.com/zh-hant/western-palace/it-was-a-mistake-grand-duke/list?title_no=3906)
* [French / Français](https://www.webtoons.com/fr/fantasy/grand-duc-c-etait-une-erreur/list?title_no=4241)
* [Indonesian / Bahasa Indonesia](https://www.webtoons.com/id/romantic-fantasy/mistake-grand-duke/list?title_no=3855)
* [Japanese / 日本語](https://manga.line.me/product/periodic?id=Z0001870)
* [Thai / ภาษาไทย](https://www.webtoons.com/th/challenge/%E0%B9%81%E0%B8%81%E0%B8%A3%E0%B8%99%E0%B8%94%E0%B8%94%E0%B8%A2%E0%B8%84-%E0%B8%A1%E0%B8%99%E0%B9%80%E0%B8%9B%E0%B8%99%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%9C%E0%B8%94%E0%B8%9E%E0%B8%A5%E0%B8%B2%E0%B8%94/list?title_no=788773)
Chapters
Chapter 61
27/08/2025
Chapter 60
27/08/2025
Chapter 59
27/08/2025
Chapter 58
27/08/2025
Chapter 57
27/08/2025
Chapter 56
27/08/2025
Chapter 55
27/08/2025
Chapter 54
27/08/2025
Chapter 53
27/08/2025
Chapter 52
27/08/2025
Chapter 51
27/08/2025
Chapter 50
27/08/2025
Chapter 49
27/08/2025
Chapter 48
27/08/2025
Chapter 47
27/08/2025
Chapter 46
27/08/2025
Chapter 45
27/08/2025
Chapter 44.5
27/08/2025
Chapter 44
27/08/2025
Chapter 43
27/08/2025
Chapter 42
27/08/2025
Chapter 41
27/08/2025
Chapter 40
27/08/2025
Chapter 39
27/08/2025
Chapter 38
27/08/2025
Chapter 37
27/08/2025
Chapter 36
27/08/2025
Chapter 35
27/08/2025
Chapter 34
27/08/2025
Chapter 33
27/08/2025
Chapter 32
27/08/2025
Chapter 31
27/08/2025
Chapter 30
27/08/2025
Chapter 29
27/08/2025
Chapter 28
27/08/2025
Chapter 27
27/08/2025
Chapter 26
27/08/2025
Chapter 25
27/08/2025
Chapter 24
27/08/2025
Chapter 23
27/08/2025
Chapter 22
27/08/2025
Chapter 21
27/08/2025
Chapter 20
27/08/2025
Chapter 19
27/08/2025
Chapter 18
27/08/2025
Chapter 17
27/08/2025
Chapter 16
27/08/2025
Chapter 15
27/08/2025
Chapter 14
27/08/2025
Chapter 13
27/08/2025
Chapter 12
24/09/2025
Chapter 11
24/09/2025
Chapter 10
22/01/2026
Chapter 9
24/09/2025
Chapter 8
24/09/2025
Chapter 7
24/09/2025
Chapter 6
24/09/2025
Chapter 5
24/09/2025
Chapter 4
24/09/2025
Chapter 3
24/09/2025
Chapter 2
24/09/2025
Chapter 1
24/09/2025
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