Kadro (15)
Lee Si-kangCha Seo-joon
Lee Chae-youngHan Yoo-ra
Kang Eun-takLee Tae-pung / Yoo Min-hyuk
Uhm Hyun-kyungHan Yoo-jung
Kim Jung-donBaek Min-won
Oh Chae-eunDong-ho's Kindergarten Teacher
EruChoi Joon-seok
Yang Mi-kyungLee Kyung-hye
Seo Woo-jinHan Ho-dong / Lee Min-woo
Lee Il-hwaYoon Su-hee / Seo Ji-sook
Chae BinKang Ye-jin
Theo JangHan Yoo-myeong
Kim Hee-jungJoo Hwa Yeon [Seo Jun's mother]
Ha Mheen
Kim Da-inHan Yoo-jung (young)