Your Letter

Lee Su-hyun

Lee So-ri (voice)

Kim Min-ju

Park Dong-soon (voice)

Min Seung-woo

Jung Ho-yeon (voice)

Nam Doh-hyeong

Ahn Seung-kyu (voice)

Kim Yeon-woo

Kim Ji-min (voice)

Lee Mi-na

Kim Sunny / Lee Su-kyung (voice)

Kim Chae-rin

Cho Ho-ran (voice)

Kim Yea-lim

Yang Song-hee (voice)

Kim A-rong

Young Lee So-ri (voice)

Lee Serena

Young Jung Ho-yeon (voice)

Park Ki-wook

Lee So-ri's Father (voice)

Kim Soon-mi

Doctor (voice)

Kim Hyeon-uk

Jersey (voice)

Won Jong-jun

Mask (voice)

Choi Hyun-sik

Bully from Hanwol Middle School (voice)