It Was a Mistake, Grand Duke!
3.40
Ratings
5042
Views
0
Bookmarks
Vivian Louis, the twenty-one-year-old daughter of a Count, seems sweet and innocent, but she has one guilty pleasure: her crush on the stunningly handsome Grand Duke Lennox Elphidion Glenn! Vivian fell in love with Lennox at first sight at the age of fourteen and has since become obsessed with him, creating countless pieces of fan art and fan fiction. But everything changes when an accident with her best friend's magical crystal ball results in Lennox being kidnapped and tied up in Vivian's bed. To make matters worse, Lennox accuses Vivian of being his kidnapper! Desperate to clear her name, the two agree to pretend to be a couple and sign a one-year contract. However, Lennox seems to want more than a fake relationship. As they continue their charade, Vivian realizes that her dream of being with Lennox could become a reality. Will this fake romance turn into a real one?
Type
Manhwa
Genre
Published
October 17, 2024
Updated
July 10, 2025
It Was a Mistake, Grand Duke! Episodes
Chapter 52
October 19, 2024
Chapter 51
October 19, 2024
Chapter 50
October 19, 2024
Chapter 49
October 19, 2024
Chapter 48
October 19, 2024
Chapter 47
October 19, 2024
Chapter 46
October 19, 2024
Chapter 45
October 19, 2024
Chapter 44.5
October 19, 2024
Chapter 44
October 19, 2024
Chapter 43
October 19, 2024
Chapter 42
October 19, 2024
Chapter 41
October 19, 2024
Chapter 40
October 19, 2024
Chapter 39
October 19, 2024
Chapter 38
October 19, 2024
Chapter 37
October 19, 2024
Chapter 36
October 19, 2024
Chapter 35
October 19, 2024
Chapter 34
October 19, 2024
Chapter 33
October 19, 2024
Chapter 32
October 19, 2024
Chapter 31
October 19, 2024
Chapter 30
October 19, 2024
Chapter 29
October 19, 2024
Chapter 28
October 19, 2024
Chapter 27
October 19, 2024
Chapter 26
October 19, 2024
Chapter 25
October 19, 2024
Chapter 24
October 19, 2024
Chapter 23
October 19, 2024
Chapter 22
October 19, 2024
Chapter 21
October 19, 2024
Chapter 20
October 19, 2024
Chapter 19
October 19, 2024
Chapter 18
October 19, 2024
Chapter 17
October 19, 2024
Chapter 16
October 19, 2024
Chapter 15
October 19, 2024
Chapter 14
October 19, 2024
Chapter 13
October 19, 2024
Chapter 12
October 19, 2024
Chapter 11
October 19, 2024
Chapter 10
October 19, 2024
Chapter 9
October 19, 2024
Chapter 8
October 19, 2024
Chapter 7
October 19, 2024
Chapter 6
October 19, 2024
Chapter 5
October 19, 2024
Chapter 4
October 19, 2024
Chapter 3
October 19, 2024
Chapter 2
October 19, 2024
Chapter 1
October 19, 2024
Explore the Leading Edge of Manga Trends!
Experience the latest sensations in the world of manga. Dive into the stories that everyone's talking about and ride the wave of today's hottest trends. Don't miss out on the excitement!
The Beginning After the End
The ruler of a society that places a great emphasis on martial ability, King Grey, commands immense power, wealth, and prestige. However, his exalted
8.26 Rating
240 Episodes
Elite Yankee Saburou
Elite Yankee Saburo is set in Tokumaru Academy, a renowned high school infamous for its disruptive students. The Ookouchi siblings, Ichirou and Jirou,
6.42 Rating
1 Episodes
Koko Jidai ni Gomandatta Jou sama to no Dousei Seikatsu wa Igaito Igokochi ga Warukunai
"Hey, wanna do it?" A romantic comedy about living together with a scarred queen in a relationship that's more than friends but less than lovers!! One
5.98 Rating
15 Episodes
Got a Room?
From Daycomics: I thought you were here to look at the room, so what are you staring at? Living in a share house full of girls. The rent went down, bu
7.29 Rating
65 Episodes
The Greatest Estate Developer
After dozing off while reading a fantasy story, Suho Kim, a pupil of civil engineering, finds himself transported into the book's plot! He is now inha
8.73 Rating
201 Episodes
Mikadono Sanshimai wa Angai, Choroi.
When Yuu enrolled at Saika Academy, a well-regarded institution for developing skills, everyone held high expectations for him because his mother was
7.37 Rating
177 Episodes
The Reason Why Raeliana Ended up at the Duke's Mansion
In modern-day Korea, Park Eunha is suddenly thrust into the body of Raeliana McMillan - a wealthy baron's daughter in a world akin to a novel she once
8.31 Rating
156 Episodes
Reborn With Might: Spearhead to the Zenith
The world completely changed when spiritual energy was restored. Those called cultivators began to rise to prominence, and all the rules of the world
6.04 Rating
38 Episodes
I Tried to Debut My Kid, But Ended Up Debuting Myself
Yoon Hyesung is just your average office worker—but in her heart, she’s the number-one fan of Na Yeonwoo, a trainee who keeps getting this close to de
0.00 Rating
15 Episodes
Hachimitsu to Clover
Living in a shabby student apartment, Takemoto's primary concern is when he'll scrape enough funds to indulge in meat and if he'll make it to his lect
8.35 Rating
76 Episodes
The Greatest Heiress of the Empire
Estelle's life shatters when her family, already resentful of her albinism, abandons her for Seria, who claims to be their real daughter. Left to wand
6.42 Rating
66 Episodes
Penpen and Onee-san
6.63 Rating
33 Episodes
Shuumatsu, Kimi to
Gourmet BL. Two people peacefully enjoying meals together against the backdrop of a mysterious zombie outbreak.Shuuhei is consumed by the promise he m
6.40 Rating
11 Episodes
Maou no Ore ga Dorei Elf wo Yome ni Shitanda ga, Dou Medereba Ii?
Zagan is notorious among the populace for his villainous reputation as a malevolent sorcerer. He spends his days engrossed in the study of sorcery and
7.60 Rating
75 Episodes
Mokushiroku no Yonkishi
Percival has always embraced a simple life living with his grandfather on God's Finger, a remote sanctuary towering above the clouds. However, he secr
6.80 Rating
200 Episodes
Denpa Kyoushi
Despite being a prodigious physics talent in his teens, Junichirou Kagami's passion for science fizzled out after college. He became idle, devoting hi
7.93 Rating
154 Episodes
Precious Daughter of the Greatest Martial Arts Villain
Being Cheon Ma's daughter, Lihwa is completely engrossed in a Wuxia tale. Nonetheless, her compassionate nature is completely different from that of t
7.15 Rating
143 Episodes
Immortals Down Under
Why do the Yama, Rulers of the Underworld, get to slack off on their jobs and visit the Mortal World? Why is that one person's name not in the Book th
6.12 Rating
114 Episodes
Hachimitsu to Clover
Living in a shabby student apartment, Takemoto's primary concern is when he'll scrape enough funds to indulge in meat and if he'll make it to his lect
8.35 Rating
76 Episodes
The Greatest Heiress of the Empire
Estelle's life shatters when her family, already resentful of her albinism, abandons her for Seria, who claims to be their real daughter. Left to wand
6.42 Rating
66 Episodes
Penpen and Onee-san
6.63 Rating
33 Episodes
Shuumatsu, Kimi to
Gourmet BL. Two people peacefully enjoying meals together against the backdrop of a mysterious zombie outbreak.Shuuhei is consumed by the promise he m
6.40 Rating
11 Episodes
Maou no Ore ga Dorei Elf wo Yome ni Shitanda ga, Dou Medereba Ii?
Zagan is notorious among the populace for his villainous reputation as a malevolent sorcerer. He spends his days engrossed in the study of sorcery and
7.60 Rating
75 Episodes
Mokushiroku no Yonkishi
Percival has always embraced a simple life living with his grandfather on God's Finger, a remote sanctuary towering above the clouds. However, he secr
6.80 Rating
200 Episodes
Denpa Kyoushi
Despite being a prodigious physics talent in his teens, Junichirou Kagami's passion for science fizzled out after college. He became idle, devoting hi
7.93 Rating
154 Episodes
Precious Daughter of the Greatest Martial Arts Villain
Being Cheon Ma's daughter, Lihwa is completely engrossed in a Wuxia tale. Nonetheless, her compassionate nature is completely different from that of t
7.15 Rating
143 Episodes
Immortals Down Under
Why do the Yama, Rulers of the Underworld, get to slack off on their jobs and visit the Mortal World? Why is that one person's name not in the Book th
6.12 Rating
114 Episodes
Comments (0)
Share your thoughts on the manga you've read with our community!
You must be logged in to comment. Login here.