Seo Ji-won
Jung In-sun
Seo Ji-won

“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.
Seo Ji-won
Jung In-sun
Seo Ji-won
Lee Ran-joo
Hani
Lee Ran-joo
Hong Ah Young
Cha Min-jee
Hong Ah Young
Lee Seung-yoo
Kang Min-hyuk
Lee Seung-yoo
Cha Do-hoon
Song Jae-rim
Cha Do-hoon
Hyung Joon-young
Baek Sung-chul
Hyung Joon-young
Yoon Sun-Mi
Lee Chae-won
Yoon Sun-Mi
Lee Hye-Ryeong
Kim Ji-sung
Lee Hye-Ryeong
Ms. Jung [radio program staff]
Kim Min
Ms. Jung [radio program staff]
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