Characters played by So Ji-seob
Woo-jin
Characters played by Son Ye-jin
Soo-ah
Characters played by Yoo-ram Bae
Hong-goo (young)
Characters played by So-Hyun Gam
Ji-Ho's classmate
Characters played by Lee Joon-hyuk
Choi
Characters played by Seo Jung-Yeon
Seo Bin's mom
Characters played by Hyeon-soo Kim
Soo-ah (young)
Characters played by Chang-Seok Ko
Hong-goo
Characters played by Min-Sung Lee
Seo-Bin (young)
Characters played by Seo Jun Park
Ji-ho (adult)
Characters played by Uhm Seo-Hyun
Na Eun
Characters played by Yeo-Eun Son
Hyun-jung
Characters played by Lee You-Jin
Woo-jin (young)