Ryu Seung-ryong as Kang Jin-bong

Yum Jung-ah as Oh Se-yeon

Park Se-wan as Young Oh Se-yeon

Ong Seong-wu as Park Jeong-woo

Shim Dal-gi as Hyun-jeong

Ha Hyun Sang as Kang Seo-jin

Kim Da-in as Kang Ye-jin

Park Young-kyu as Jin-bong's Father

Kim Hye-ok as Jin-bong's Mother

Jeon Moo-song as Mr. Choi

Shin Shin-ae as Landlady

Kim Jong-soo as Mokpo High School Teacher

Ko Chang-seok as Purser

Yeom Hye-ran as Hyeon-jeong

Kim Sun-young as Jeong-ah

Ryu Hyun-kyung as Homeroom Teacher

Kim Sun-hoa as Se-yeon's Boarding House Friend

Park Kyung-chan as Doctor

Joung Young-sub as PD