Actress Seo Ji-young-I transforms into Son Ye-jin's mother. Lucky Monster Entertainment, Seo Ji-young-I's agency, said on the 25th, "Actor Seo Ji-young-I will appear as the mother of Mi-jo (Son Ye-jin) in JTBC's new drama "Thirty, Nine", Encounter, Killed my Wife, Run On, She's From Another Planet, Thirty, Nine, Jeon Mi-do, Kim Ji-hyun, Kim Sang-ho-III, Kim So-jin, Lee Moo-saeng, Lee Tae-hwan, Seo Ji-young-I, Son Ye-jin, Yeon Woo-jin, Yoo Yeong-ah