A misunderstood loner is drawn out of his shell after transferring to another high school, where he comes across new ordeals -- and first love.
Ong Seong-wu
Choi Joon-Woo
Kim Hyang-gi
Yoo Soo-Bin
Shin Seung-ho
Ma Whi-Young
Kang Ki-young
Oh Han-Kyeol
Shim Yi-young
Joon-Woo's mother
Kim Sun-young
Soo-Bin's mother
Choi Jae-woong
Choi Myeong-jun
Moon Bin
Jung Oh-je
Jeong Young-joo
Park Geum-ja
Jung Hyeon-jun
Choi Joon-Woo (young)
Yoo In-soo
Yoo Pil-Sang
Han Sung-min
Hwang Ro-mi
Kim Bo-yoon
Kwon Da-hwin
Moon Joo-yeon
Yoon So-ye
Baek Jae-woo
Go Dong
Hur Young-ji
Kim Ji-min
Ong Seong-wu
Choi Joon-Woo
Kim Hyang-gi
Yoo Soo-Bin
Shin Seung-ho
Ma Whi-Young
Kang Ki-young
Oh Han-Kyeol
Shim Yi-young
Joon-Woo's mother
Kim Sun-young
Soo-Bin's mother
Choi Jae-woong
Choi Myeong-jun
Moon Bin
Jung Oh-je
Jeong Young-joo
Park Geum-ja
Jung Hyeon-jun
Choi Joon-Woo (young)
Yoo In-soo
Yoo Pil-Sang
Han Sung-min
Hwang Ro-mi
Kim Bo-yoon
Kwon Da-hwin
Moon Joo-yeon
Yoon So-ye
Baek Jae-woo
Go Dong
Hur Young-ji
Kim Ji-min
Ong Seong-wu
Choi Joon-Woo
Kim Hyang-gi
Yoo Soo-Bin
Shin Seung-ho
Ma Whi-Young
Kang Ki-young
Oh Han-Kyeol
Shim Yi-young
Joon-Woo's mother
Kim Sun-young
Soo-Bin's mother
Choi Jae-woong
Choi Myeong-jun
Moon Bin
Jung Oh-je
Jeong Young-joo
Park Geum-ja
Jung Hyeon-jun
Choi Joon-Woo (young)
Yoo In-soo
Yoo Pil-Sang
Han Sung-min
Hwang Ro-mi
Kim Bo-yoon
Kwon Da-hwin
Moon Joo-yeon
Yoon So-ye
Baek Jae-woo
Go Dong
Hur Young-ji
Kim Ji-min