Yoona

Seon-ji

윤아

Ahn Bo-hyun

Gil-gu

안보현

Sung Dong-il

Jang-su

성동일

주현영

Ah-ra

신현수

Yeong-sik

Go Geon-han

Hee-bum

고건한

한재아

Main body of Moon-yang

송덕호

Young Jang-su

박은진

Seon-ji's Mother

정지우

Seon-ji's Maternal Great-grandmother

이시래

Seon-ji's Maternal Great-grandfather

나경숙

Seon-ji's Maternal Great-grandmother's Mother-in-Law

이효비

8-year-old Seon-ji

김예나

15-year-old Seon-ji

김은수

Convenience Store Part-timer

백승철

Middle-aged Male Patient