내 마음의 풍금

Jeon Do-yeon

Yun Hong-yeon

Lee Byung-hun

Kang Soo-ha

이미연

Yang Eun-Hee

송옥숙

Yun Hong-yeon's Mother

김재인

Nan-hee

서혜린

Teacher Yu

Lee Dae-yeon

Teacher Jo

김선화

Bum-soo's mother

박광진

Kim Joo's grandfather

이준

Soon-cheol

이영후

Bookstore Owner

전무송

Headmaster