On screen
Cast
27 credited performers
Lee Joon-gi
Baek Hee-sung / Do Hyun-soo
Moon Chae-won
Cha Ji-won
Jang Hee-jin
Do Hae-soo
Seo Hyun-woo
Kim Moo-jin
Jung Seo-yeon
Baek Eun-ha
Nam Gi-ae
Gong Mi-ja
Son Jong-hak
Baek Man-woo
Jo Kyung-sook
Moon Young-ok
Choi Dae-hoon
Lee Woo-chul
Choi Young-jun
Choi Jae-sup
Kim Soo-oh
Im Ho-joon
Im Cheol-hyung
Yoon Sang-pil
Yang Hye-jin
Kang Pil-young
Ju Ye-eun
Reporter Joo
Hong Seo-jun
Chief Kang
Park Hyun-joon
Young Do Hyun-soo
Im Na-young
Young Do Hae-soo
Jeong Taek-hyeon
Young Kim Moo-jin
Choi Byung-mo
Do Min-seok
Kim Ji-hoon
Baek Hee-sung
Choi Young-woo
Lee Tae‑seop
Ha Min
School Counselor
Lee Ju-yeon
Park Seo-young
Shin Seo-woo
[Apartment boy]
Choi Kwon-soo
Baek Hui Seong [Teen]
Seo Ye-hee
Yoon Ji-hoon's mother
Moon Ha-yeon
Jang Young-hee's Daughter