Main •
Chun Ho-jin as Song Young-dal •
Cha Hwa-yeon as Jang Ok-boon •
Lee Min-jung as Song Na-hee — Young-dal and Ok-boon's third child, a
pediatrician. •
Lee Sang-yeob as Yoon Gyu-jin — Na-hee's husband, an
internist.
Supporting •
Oh Dae-hwan as Song Joon-sun — Young-dal and Ok-boon's eldest child. •
Oh Yoon-ah as Song Ga-hee — Young-dal and Ok-boon's second child. •
Lee Cho-hee as Song Da-hee — Young-dal and Ok-boon's youngest child. •
Moon Woo-jin as Kim Ji-hoon — Ga-hee's son.
Yoon Gyu-jin's family • Sung Chan-ho as Gyu-jin and Jae-seok's deceased father, only appears in their family photo. •
Kim Bo-yeon as Choi Yoon-jung — Gyu-jin and Jae-seok's mother. •
Lee Sang-yi as Yoon Jae-seok — Gyu-jin's younger brother, Da-hee's love interest, later her husband.
Yongju Market •
Lee Jung-eun as Kang Cho-yeon — Sister's Kimbap store owner. Young-dal's long-lost younger sister, Song Young-sook. •
Baek Ji-won as Jang Ok-ja — Ok-boon's unmarried younger sister. •
Ahn Gil-kang as Yang Chi-soo — Young-dal's friend. •
Ki Do-hoon as Park Hyo-shin — Song's family fried chicken restaurant part-time delivery man, later became a stuntman for Joon-sun's action company. Ga-hee's love interest. • Kim So-ra as Lee Joo-ri — Sister's Kimbap store worker. • Song Da-eun as Kim Ga-yeon — Sister's Kimbap store worker. • Shin Mi-young as Park Kyung-hwa — Dried fish store owner. • Kim Ga-young as Im Jin-joo — Twisted donut store owner.
Family of Joon-sun •
Im Jung-eun as Sung Hyun-kyung — Joon-sun's wife. • Lee Ga-yeon as Song Seo-young — Joon-sun's eldest daughter. • Ahn Seo-yeon as Song Seo-jin — Joon-sun's younger daughter.
Members of Evergreen Children's Hospital •
Alex Chu as Lee Jeong-rok — Na-hee's medical school senior. •
Son Seong-yoon as Yoo Bo-young — Gyu-jin's first love. •
Song Min-jae as Yoo Shi-hoo — Bo-young's son. • Shin Soo-jung as Park Ji-yeon •
Kang You-seok as Han Gi-young •
Kim Hyun-mok as Hong Sung-woo • Kim Mi-eun as Shin Hye-jung • Lee Sang-kyung as Shim Jung-hee • Han Bom as Oh Yeon-ji
Others •
Oh Eui-shik as Oh Jung-bong — Joon-sun's action junior, a stuntman. • Jang Won-hyuk as Lee Jong-soo — Joon-sun's action junior, a stuntman. • Bae Ho-geun as Kim Seung-hyun — Ga-hee's ex-husband. • Heo Hyun-ho as Monk Yong Kang — Monk who is a father figure to Cho-yeon. • Kim Hye-won as Kwon Ji-hye — Ga-hee's store manager. • Jung Han-bit as Seo Yoon-hee — Jae-seok's blind date. •
Jo Mi-ryung as Hong Yeon-hong — Cho-yeon's friend, a schemer and troublemaker. • Nam Jung-hee as Shim Moon-sil — Yeon-hong's mother.
Special appearances •
Ji Il-joo as Cha Young-hoon — Da-hee's ex-fiancé. • Son Jong-hak as Jang Choong-soo — Evergreen Children Hospital's director. •
Lee Sung-kyung as Ji Sun-kyung — Jae-seok's ex-girlfriend. •
Kang Chan-hee as Choi Ji-won — Da-hee's friend from college. •
Jo Han-chul as Jo Won-chul — Loan shark that harasses Yeon-hong for her debts. •
Lee Pil-mo as Lee Hyun — Hyun Media CEO, film director for Yongju Market's promotional video. ==Viewership==