Children of the 20th Century () is a 2017 South Korean television series starring Han Ye-seul and Kim Ji-suk with Lee Sang-woo, Ryu Hyun-kyung and Lee Sang-hee. The series aired on Mondays and Tuesdays at 22:00 (KST), from October 9 to November 28, 2017. Synopsis The story follows three women in their mid-thirties as they navigate their love lives, friendships, and their familial ties. Cast Main Han Ye-seul as Sa Jin-jin Kang Mi-na as young Sa Jin-jin An idol turned actress adored by many. Despite her good looks and fame, she has not dated before. Kim Ji-suk as Gong Ji-won Kim In-seong as young Gong Ji-won An investment banker with a Harvard MBA, and a background in Wall Street. He is innocent in love and remains loyal to his first love. Lee Sang-woo as Anthony / Lee Chul-min Park Seo-ham as young Anthony A former boy band member of Boys Be Ambitious. Sa Jin-jin's crush since young. He is also Ji-won's step brother. Ryu Hyun-kyung as Han A-reum Song Soo-hyun as young Han A-reum A flight attendant who is constantly on a diet and takes the initiative to ask guys out. Lee Sang-hee as Jang Young-shim Han Ji-won as young Jang Young-shim A lawyer who has had perfect grades since young. Ahn Se-ha as Jung Woo-sung Kwon Do-kyun as young Jung Woo-sung A gynecologist. He was handsome when he was young, but his looks drastically changed after he grew older. He attended the same school as the Four Bongos. Oh Sang-jin as Kang Kyung-suk A highly principled lawyer who doesn't care for money or glory. Young-shim's boss. Supporting People around Jin-jin Kim Chang-wan as Sa Chang-wan, Jin-jin's father Kim Mi-kyung as Kim Mi-kyung, Jin-jin's mother Shin Won-ho as Sa Min-ho, Jin-jin's younger brother Kim Jung-hwa as Sa Ho-sung / Lee Su-hyun, Jin-jin's older sister Chamjin Entertainment Kim Kwang-shik as Jang Gi-bong, Jin-jin's manager Lee Jae-kyoon as Lee Hong-hee, Jin-jin's road manager Lee Yoo-mi as Mi-dal (Cho Mi-hyun), Jin-jin's stylist People around Ji-won Kim Tae-hoon as Lee Seung-goo, Ji-won's step father Kim Young-sun as Lee Gwang-hee, Ji-won's mother Shin Se-hwi as Lee Ha-ram, Ji-won's half-sister Jung Jae-ho as Kim Tae-hyun, Ji-won's assistant People around A-reum Choi Beom-ho as Han Hak-gyu, A-reum's father Yoon Bok-in as Yoon Bok-in, A-reum's mother Jang Hee-ryung as Jang Ji-hye, A-reum's colleague Lee Chang-yeob as Lee Dong-hoon, a co-pilot that A-reum had a crush on People around