“How to Be Thirty” will be a relatable romance centering around the work and love lives of women who have just entered their 30s. The drama follows the story that unfolds when 30-year-old webtoon author Seo Ji Won meets her publisher Lee Seung Yoo, who is also her first love from middle school.


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Jung In-sun
Seo Ji-won (15 episodes)

Hani
Lee Ran-joo (15 episodes)

Cha Min-jee
Hong Ah Young (15 episodes)

Kang Min-hyuk
Lee Seung-yoo (15 episodes)

Song Jae-rim
Cha Do-hoon (15 episodes)

Baek Sung-chul
Hyung Joon-young (15 episodes)

Lee Chae-won
Yoon Sun-Mi (15 episodes)

Kim Ji-sung
Lee Hye-Ryeong (15 episodes)

Kim Min
Ms. Jung [radio program staff] (15 episodes)