An Seong-won
Hong Du-Sik (young teen) (19 eps)
Shin Min-a
Yoon Hye-jin (16 eps)
Kim Seon-ho
Hong Du-sik (16 eps)
Lee Sang-yi
Ji Sung-hyun (16 eps)
Gong Min-jeung
Pyo Mi-seon (16 eps)
Kim Yeong-ok
Kim Gam-ri (16 eps)
Jo Han-chul
Oh Chae-jun (16 eps)
In Gyo-jin
Chang Yeong-guk (16 eps)
Lee Bong-ryeon
Yeo Hwa-jeong (16 eps)
Cha Chung-hwa
Jo Nam-sook (16 eps)
Kang Hyung-suk
Choi Eun-cheol (16 eps)
Lee Suk-hyeong
Kang Do-ha (16 eps)
Lee Yong-i
Lee Mat-yi (16 eps)
Shin Shin-ae
Park Sook-ja (16 eps)
Yoon Seok-hyun
Choi Geum-cheol (16 eps)
Kim Min-seo
Oh Ju-ri (16 eps)
Kim Seong-beom
Ban Yong-hoon (16 eps)
Gi Eun-you
Jang Yi-jun (16 eps)
Go Do-yeon
Choi Bo-ra (16 eps)
Hong Ji-hee
Yu Cho-hui (16 eps)
Seo Sang-won
Yoon Tae-hwa (16 eps)
Woo Mi-hwa
Lee Myung-shin (16 eps)
Park Ye-yeong
Wang Ji-won (16 eps)
Byun Sung-tae
Jun (16 eps)
Baek Seung
In-woo (16 eps)
Kim Seong-in
"The Seashore Grasshopper" crew member (5 eps)
Shim Hye-yeon
Yoon Hye-jin (young) (4 eps)
Oh Eui-sik
Park Jung-woo (3 eps)
Kim Ju-yeon
Ham Yun-kyung (3 eps)
Lee Jin-hee
Hye-jin's mother (3 eps)
Jin Yong-uk
Fisherman (3 eps)
Kim Jin-yeop
Gang-wook (3 eps)
Kim Ji-hyun
Seon-a (3 eps)
Song Min-jae
Hong Doo-shik (young) (2 eps)
Lee Ho-jae
Doo-shik's grandfather (2 eps)
Ryu Ye-ri
Hye-jin's friend (2 eps)
Min Jung-sup
Officer Lee (2 eps)
Moon Seong-hyun
Hong Doo-shik (teenager) (2 eps)
Kim Do-young
Psychiatrist (2 eps)
Kim Hak-seon
Kim Ki-hoon (2 eps)
Yoon Dan-bi
Dental tech (1 eps)
Bae Bo-ram
Ko Yoon-hee (1 eps)
Lee Jung-eun
Kim Yeon-ok (1 eps)
Bae Hae-seon
Lee Min-young (1 eps)
Yang Jin-seon
Market woman (1 eps)
Im Seong-mi
Hwang Ji-won (1 eps)
Hong In-a
Hye-jin's friend (1 eps)
Choi Yoo-jin
Hye-jin's friend (1 eps)
Jo Ji-hyeon
Waitress (1 eps)
Lee Si-hoon
Patient (1 eps)
Park Chan-guk
Police officer (1 eps)
Kim Jae-man
Kim Min-sub (1 eps)
Park Ok-chul
Waitress (1 eps)
Bae Min-jun
Choi Geum-cheol (teenager) (1 eps)
Lee Hyeon-seo
Pharmacist (1 eps)
Yang Seung-won
Himself (1 eps)
Oh Ye-ju
Yoon Hye-jin (teenager) (1 eps)
Kim Jin
Kim Mi-young (1 eps)
Park Hui-eun
Dental clinic patient (1 eps)
Lee Ki-seop
Scammer (1 eps)
Cho Si-yeon
A-ram (1 eps)
Kang Jeong-im
Hwa-jung's friend (1 eps)
Kim Moon-ho
Woodworking owner (1 eps)
Ahn Su-bin
Jewelry saleswoman (1 eps)
Kim Oh-bok
Men's clothing salesman (1 eps)
Kim Dae-gon
Rotisserie chicken vendor (1 eps)
Moon Ah-ram
Hye-jin's friend (1 eps)
Park Mi-hyun
Cho-hui's mother (1 eps)
Goo Jae-yeon
Hwa-jung's mother (1 eps)
Kim Hyun
Kim Ki-hoon's wife (1 eps)
Shim Jin-hwa
Diner (1 eps)
Kim Won-suk
ovN employee (1 eps)
Lee Do-yeop
Gam-ri's son (1 eps)
Ahn Jong-jin
YK Asset Management staff (1 eps)
Choi Hye-seo
Classroom child (1 eps)
Kim Bong-hee
Deaf grandmother (1 eps)
Lee Jin-hong
Bank teller (1 eps)