Cast 33
Seo Hyun-jinGo Ha-neul
Ra Mi-ranPark Seong-soon
Ha JunDo Yeon-woo
Lee Chang-hoonBae Myeong-soo
Lee Yoon-heeLee Seung-taek
Kim Hong-paByeon Sung-joo
Ye Su-jeongYoon Yeo-hwa
Jo Yeon-heeKim Yi-boon
Jung Hae-kyunMoon Soo-ho
Park Ji-hwanSong Yeong-taeYYoo Min-kyuJi Hae-won
Heo Tae-heeHa Su-hyeon
Woo Mi-hwaHan Jae-hee
Lee Eun-saemJin Yoo-ra
Park Ji-hoonKu Jae-hyun
Jeong Taek-hyeonHwang Bo-tong
Kim Jung-youngMoon So-nyeo (Go Ha-neul's mother)MMaeng Sang-hunGo Sung-chul (Go Ha-neul's father)
Kwon So-hyunSong Ji-sun
Park Yu-rimRyu Jin-heeRRyu Ji-eunGo Ha-neul (young)
Ahn So-rimYang Da-solRRyu In-ahGo Ha-neul [Young]
Tae In-hoKim Young-ha
Lee Hyun-kyunHa-Neul's high school teacher
Kil Hae-yeonYoung Ha's mother
Ok Joo-riStore owner
Seo Jeong-yeonJi Yun's mom
Kim Jung-sooPrincipal Gang
Park Jin-youngHigh School Principal
Yoo Young-bokGangnam High School Principal
Choe MinHan Se-Wol
Baek Eun-haeSong Chan-Hee