Ryu Seung-ryong
— Kang Jin-bong
Yum Jung-ah
— Oh Se-yeon
Park Se-wan
— Young Oh Se-yeon
Ong Seong-wu
— Park Jeong-woo
심달기
— Hyun-jeong
하현상
— Kang Seo-jin
Kim Da-in
— Kang Ye-jin
박영규
— Jin-bong's Father
김혜옥
— Jin-bong's Mother
Jeon Moo-song
— Mr. Choi
신신애
— Landlady
Kim Jong-soo
— Mokpo High School Teacher
Ko Chang-seok
— Purser
Yeom Hye-ran
— Hyeon-jeong
Kim Sun-young
— Jeong-ah
류현경
— Homeroom Teacher
김선화
— Se-yeon's Boarding House Friend
박경찬
— Doctor
정영섭
— PD
김인경
— Choreography team
황정윤
— Nurse