Cast 31
Seo Hyun-jin
Go Ha-neul (16 episodes)
Ra Mi-ran
Park Seong-soon (16 episodes)
Ha Jun
Do Yeon-woo (16 episodes)
Lee Chang-hoon
Bae Myeong-soo (16 episodes)
Lee Yoon-hee
Lee Seung-taek (16 episodes)
Kim Hong-pa
Byeon Sung-joo (16 episodes)
Ye Su-jeong
Yoon Yeo-hwa (16 episodes)
Jo Yeon-hee
Kim Yi-boon (16 episodes)
Jung Hae-kyun
Moon Soo-ho (16 episodes)
Park Ji-hwan
Song Yeong-tae (16 episodes)
Yoo Min-kyu
Ji Hae-won (16 episodes)
Heo Tae-hee
Ha Su-hyeon (16 episodes)
Woo Mi-hwa
Han Jae-hee (16 episodes)
Lee Eun-saem
Jin Yoo-ra (16 episodes)
Park Ji-hoon
Ku Jae-hyun (16 episodes)
Jeong Taek-hyeon
Hwang Bo-tong (16 episodes)
Kim Jung-young
Moon So-nyeo (Go Ha-neul's mother) (16 episodes)
Maeng Sang-hun
Go Sung-chul (Go Ha-neul's father) (16 episodes)
Kwon So-hyun
Song Ji-sun (16 episodes)
Park Yu-rim
Ryu Jin-hee (16 episodes)
Ryu Ji-eun
Go Ha-neul (young) (16 episodes)
Baek Eun-hae
Song Chan-Hee (3 episodes)
Tae In-ho
Kim Young-ha (2 episodes)
Choe Min
Han Se-Wol (2 episodes)
Lee Hyun-kyun
Ha-Neul's high school teacher (1 episode)
Kil Hae-yeon
Young Ha's mother (1 episode)
Ok Joo-ri
Store owner (1 episode)
Seo Jeong-yeon
Ji Yun's mom (1 episode)
Kim Jung-soo
Principal Gang (1 episode)
Park Jin-young
High School Principal (1 episode)
Yoo Young-bok
Gangnam High School Principal (1 episode)
Crew 1
Baek Kyung-chan
Martial Arts Choreographer (16 episodes)
Directing 1
Hwang Jun-hyeok
Director (16 episodes)
Writing 1
Park Ju-yeon
Writer (16 episodes)