Heesu in Class 2

Ji-ho Ahn

Lee Hee-soo

Lee Sang-jun

Kim Seung-won

Jo Joon-Young

Joo Chan-yeong

Kim Do-yeon

Choi Ji-yoo

Park Kyung-hye

Lee Hee-jae

Kim Han-na

Lee Hee-jeong

Jung Ye-Nok

Lee Hee-sin

Jeon Yeong-in

Sin Ho-sik

Yeon Si-Woo

Cha So-hee

Jung-ah Yang

Seung-won's mom

Go Gyu-pil

Kim Jeong-myeong

Shi-hoo Kim

Joo Do-yeong (Chan-yeong's brother)

Choi Rak-Yeong

Counseling club member

Park Yoo-hyun

Ji-yeon

Kim Yun-ha

School bully

Baek Na-gyeong

Lee Jin-hwa

Jo Yoon-joo

Choi Jeong-in