On a sunny day, a boy named Jo-kang meets Ari, a girl in a yellow raincoat, and they become friends. Jo-kang falls helplessly in love with the quirky but attractive Ari, but one day, she suddenly disappears.
A-ri
Cho Jo-kang
Jo-kang's Dad
Monk
Byeon-ja
Dr. Chu
Taxi driver
Dr. Kang
Jo-kang's mother
Young Jo-kang
Young A-ri
Teacher
Joon-chul
Sang-hyeok
Young-ho
Grandmother
Kid
