Series synopsis
The First Night with the Duke, also known as 남주의 첫날밤을 가져버렸다 is a South Korean sci-fi & fantasy comedy drama television series that premiered on KBS2 on June 11, 2025. It ended on July 17, 2025. It was created by 全善英. It stars Seohyun, Ok Taec-yeon, Kwon Han-sol and Seo Bum-june.
Reincarnated as a minor character in a novel, Cha Seon-taek unexpectedly spends a night with Prince Kyungsung, sparking an intense and unexpected romance.
Premise
Reincarnated as a minor character in a novel, Cha Seon-taek unexpectedly spends a night with Prince Kyungsung, sparking an intense and unexpected romance.
Cast and characters
Leading cast
- Seohyun as Cha Seon-chaek / K
- Ok Taec-yeon as Prince Kyungsung / Lee Beon
- Kwon Han-sol as Cho Eun-ae
- Seo Bum-june as Jeong Su-gyeom
- Chi Hae-won as Do Hwa-seon
- Lee Tae-seon as Prince Seonghyeon
- Seo Hyun-chul as Cha Ho-yeol
- Yun Yoo-sun as Yoon Deok-jeong
Supporting cast
- Lee Sang-un as Cha Jang-ho
- Kim Shin-bi as Cha Du-ho
- Yoon Jung-hoon as Cha Se-ho
- Song Yeong-jae
- Ju Seok-tae as King Seoljong
- Nam Kee-ae
- Jung Hee-tae as Do Bae-myeong
- Jung Ho-bin as Jeong Moon-seok
- Kim Young-woong as Cho Byeong-mu
- Kim Ah-young as Sul Gi [Shaman]
Guest cast
- Jung Jung-ah as Madam Jeong (Eps 3)
- Choi Hyeon-jin as Yi Beon [Teen]
- Su Hyun as [Seonmun club member]
- Ban Hye-young as Seller (eps 9)
Episodes
This series spans 1 season with 12 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 12 | June 11, 2025 | July 17, 2025 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Reading a Book is Inviting Another's Life into Yours K finds herself inhabiting the body of Cha Sun Chaek, a wealthy but completely irrelevant side character. With a VVIP ticket to watch the epic romance unfold, her simple plan is to stay out of the way and enjoy the show. But that plan is spectacularly derailed after a wild night of celebration ends with her accidentally stealing the male lead’s first night. |
June 11, 2025 |
| 2 |
The First Night in This Lifetime Cha Sun Chaek tried her best to run from Yi Beon. |
June 12, 2025 |
| 3 |
Something Always Happens on a Moonlit Night Yi Beon encountered an unusual figure. Cha Sun Chaek tries to fix the story she broke. Jeong Su Gyeom held a gathering for the Astral Philosophy Club. |
June 18, 2025 |
Production
Release
| Original network/platform | KBS2 |
|---|---|
| First aired | June 11, 2025 |
| Last aired | July 17, 2025 |
| Runtime | 61 minutes |
| Status | ended |
| Schedule | Wednesday, Thursday at 21:50:00 |