Buddy Boy

Cha Seung-yun

Yoo-ho

Yoo Yi-an

Jin-gu

Sin Sang-im

Ri-na

Son Seung-taek

Yoo-ho's Father

추수경

Teacher

소리샘

Ri-na's Mother

Cha Seungyoon

Yu Ho

Lee Tae Gyu

Jin Gu