Edited by eddlisa_uyuk at 19-6-2025 08:49 AM
Profile- Drama: The First Night With the Duke (English title) / I Took the Male Lead's First Night (literal title)
- Revised romanization: Namjuui Cheotnalbameul Gajeobeoryeodda
- Hangul: 남주의 첫날밤을 가져버렸다
- Director: Lee Woong-Hee
- Writer: Hwang Dotol (web novel), Jeon Sun-Young
- Network: KBS2
- Episodes: 12
- Release Date: June 11 - July 17, 2025
- Runtime: Weds. & Thurs. 21:50
- Genre: Fantasy-Romance
- Language: Korean
- Country: South Korea
Plot Synopsis by AsianWiki University student K (Seohyun) is an ordinary young woman, but, one day, she finds herself in her favorite romance novel that is set during historical times. She has now become the minor character Cha Sun-Chaek. She is the daughter of a wealthy noble family and her dream is have a peaceful and normal life. Cha Sun-Chaek, while possessed by K, then spends one night with Yi Beon (TaecYeon), who is the lead male character in the novel. He comes from a royal lineage and is favored by the King. Yi Beon has a cold-blooded personality and is gifted with an attractive appearance and outstanding martial arts skills. He has also experienced a heartbreaking past. Somehow, Yi Beon and Cha Sun-Chaek happen to meet and talk. Yi Beon is consoled by her about his heartbreaking past. They spend the night together. Soon, Cha Sun-Chaek tries to connect Yi Beon to Jo Eun-Ae (Kwon Han-Sol), who is the lead female character in the novel. According to the novel, Yi Beon and Jo Eun-Ae are supposed to fall in love, but, due to the appearance of Cha Sun-Chaek, Jo Eun-Ae's fate has changed. No matter how hard Cha Sun-Chaek tries, Yi Beon’s love always finds its way back to her.
Other people around them include Jung Su-Gyeom (Seo Bum-June) and Do Hwa-Seon (Ji Hye-Won). Jung Su-Gyeom is a young officer from a prestigious family. He is Yi Beon’s only friend. Do Hwa-Seon is an ambitious woman whose life goal is to marry Yi Beon and become a member of the royal family.
Main
- Seohyun as Cha Seon-chaek/K
She is a supporting character who appears only in a single line in the protagonist's favorite novel; the second, a young woman who, due to an unfortunate incident, dropped out of university and whose only hobby in her grim daily life was reading a historical web novel.[1][4] She is the original Ripley de Liverpool's counterpart.- Ok Taec-yeon as Lee Beon, Gyeongseong-gun
He is the king's favorite nephew and the male protagonist of this world. He believes that if two people have spent their first night together, they should take responsibility for each other. He is the original Zeronis Inglide's counterpart.Kwon Han-sol as Jo Eun-ae, she is the true female protagonist of the novel.Yoon Chae-na took on the role of young Eun-ae.- Seo Bum-june as Jung Soo-gyeom
He is the youngest member of Hongmungwan, the son of a prestigious and highly educated family, and the epitome of the upright and caring male lead. Gyeongseong-gun's only friend.- Ji Hye-won as Do Hwa-seon
She is a villain, who exacerbates the complex relationship between characters.- Lee Tae-sun as Lee Gyu, Seonghyeon-gun
He is another nephew of the king.
Supporting
Seon-chaek's Family
- Seo Hyun-chul as Cha Ho-yeol, Seon-chaek's father and Deok-jeong's husband. He is an upright subject who does not hesitate to speak frankly even in front of the king for the good of the country.
- Yoon Yoo-sun as Yoon Deok-jeong, the lady of the Cha family, mother of Seon-chaek and wife of Ho-yeol. She is a dignified and tidy woman, but she never loses her strength in the face of a crisis, as evidenced when a man rumored to be her daughter's matchmaker appears.
- Lee Sang-woon as Cha Jang-ho, older brother by Cha Seon-chaek, Du-ho and Se-ho; eldest son of Ho-yeol and Deok-jeong.
- Kim Shin-bi as Cha Du-ho, the medicine-obsessed second son of the Cha family.
- Yoon Jung-hoon as Cha Se-ho, the third son of the Cha family, an unpredictable eccentric with a warm, caring brotherly side.
- Oh Se-eun as Bang-ul, a servant with high-level secretarial skills who follows Seon-chaek's every move.
Others
- Song Young-jae as Haengrang-a-beom, a loyal servant of Gyeongseong-gun for many years.
- Yoon Tae-ha as Ma-yoon, a loyal follower and confidant of Gyeongseong-gun, to whom he swore loyalty. Following his orders, he pursues the mastermind behind the Black Death Group, a force that threatens the royal family.
- Joo Suk-tae as Seol-jong, the king in the novel, who was not originally in line to succeed to the throne and came to it after a purge.
- Nam Ki-ae as Dae-bi, the former king's first wife; when his only son, the crown prince, died, a bloody storm erupted in the royal family.
- Jung Hee-tae as Prime Minister Do Bae-myeong, brother-in-law of the Queen Dowager, father of Hwa-seon, for whom he is always worried.
- Jung Ho-bin as Jeong Moon-seok, a royal secretary according to the long-standing tradition of his prestigious family. He is conservative and controlling, and always disgruntled with his free-spirited son, Soo-gyeom.
- Kim Young-woong as Jo Byeong-mu, a wealthy merchant who took Eun-ae in, saved her life, and made her his adopted daughter, and whose businesses benefited from her cunning. Park Jeong-eon as the Queen Dowager Ji Mil-sang-gung.
- Lee Joo-won as Kkoma, a mysterious boy who appears in every dramatic moment Seon-chaek encounters.
Special appearance
- Kim Ah-young as Seol-gi, a shaman Seon-chaek often visits.
Notes- "The First Night With the Duke" takes over KBS2's Wed. & Thur. 21:50 time slot previously occupied by "Pump Up the Healthy Love."
- Based on web novel "Namjuui Cheotnalbameul Gajeobeoryeodda” by Hwang Dotol (published March 4 - October 11, 2019 via Naver).
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