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Blue Birthday is a South Korean drama web series produced by Naver subsidiary Playlist Studio. Directed by Park Dan-hee and co-written by Goo So-yeon and Moon Won-young, the series stars Kim Ye-rim as Oh Ha-rin and Yang Hong-seok as Ji Seo-jun. The series is a fantasy romance thriller drama in which the female protagonist, Oh Ha-Rin, revisits the past through mysterious photos left by her first love, who died on her birthday 10 years ago. It premiered on July 23 through Naver TV and WeTV and airs every Friday and Saturday at 19:00 (KST). It premiered on August 6 through YouTube for international audiences. However, it can only be accessed by audiences from South Korea.
Original Release
07/23/2021
Cast
| Name | Character |
|---|
| Kim Ye-rim | Oh Ha Rin |
| Yang Hong-Seok | Ji Seo Jun |
| Lee Jung-jae | Detective |
| Park So Jung | Do Soo Jin [Young] |
| Min-Hyung Song | [Photo Shop owner] |
| Min Chae Yeon | Ha Rin's co-worker |
| Yoo Soo Bin | Senior at Seoyeon High School |
| Kim So Yoon | Oh Ha Rin [Young] |
| Cheon Ji Won | [Hye Min's friend] |
| Moon Joo-won | Ji Seo Jun [Young] |
| # | Title | Air Date |
|---|---|---|
| 1 | My Bad Birthday | Friday, 23 July 2021 |
| 2 | You're in My Dream | Saturday, 24 July 2021 |
| 3 | Lively Ordinary Days | Friday, 30 July 2021 |
| 4 | Law of Equivalent Exchange | Saturday, 31 July 2021 |
| 5 | Another Chance | Friday, 06 August 2021 |
| 6 | What Happened That Day | Saturday, 07 August 2021 |
| 7 | It's You, Isn't It? | Friday, 13 August 2021 |
| 8 | Crisis | Saturday, 14 August 2021 |
| 9 | Witness | Friday, 20 August 2021 |
| 10 | If We Have Such A Big Misfortune | Saturday, 21 August 2021 |
| 11 | You and I | Friday, 27 August 2021 |
| 12 | Suspicion | Saturday, 28 August 2021 |
| 13 | Abandoned Girl | Friday, 03 September 2021 |
| 14 | Never Regret | Saturday, 04 September 2021 |
| 15 | Disappear | Friday, 10 September 2021 |
| 16 | My Blue Birthday | Saturday, 11 September 2021 |
Directors
Writers
Cast
| Name | Character |
|---|
| Kim Ye-rim | Oh Ha Rin |
| Yang Hong-Seok | Ji Seo Jun |
| Lee Jung-jae | Detective |
| Park So Jung | Do Soo Jin [Young] |
| Min-Hyung Song | [Photo Shop owner] |
| Min Chae Yeon | Ha Rin's co-worker |
| Yoo Soo Bin | Senior at Seoyeon High School |
| Kim So Yoon | Oh Ha Rin [Young] |
| Cheon Ji Won | [Hye Min's friend] |
| Moon Joo-won | Ji Seo Jun [Young] |
| Jeong Ye Dam | Ji Hye Min [Young] |
| Lee Sangjun | Cha Eun Seong |
| Park Joo-Hyun | Kim Eui Young |
| Kim Gyeol-Yu | Do Soo Jin |
| Kim Yi-Seo | Ji Hye Min |
| Lee Dong-Joo | Kim Shin Woo |
| Yoo Su-Bin | Senior at Seori Highschool |
