Bubble Gum

Lee Dong-wook

Park Ri-hwan

Jung Ryeo-won

Kim Haeng-ah

Lee Jong-hyuk

Kang Suk-joon

Park Hee-von

Lee Seul

Park Cheol-min

Kim Joon-hyuk

Bae Jong-ok

Park Sun-young

Kim Jung-nan

Oh Se-young

Park Joon-geum

Yi-seul's mother

Lee Seung-joon

Kwon Ji-hoon

Park Won-sang

Jo Dong-il

An Woo-yeon

Ye Joon-soo

Kim Sa-Kwon

Hong Jung-woo

Kim Ri-na

No Tae-Hee

Han Seo-jin

Kim Haeng-A (7 years old)

Go Bo-gyeol

No Dong-Hwa

Seo Jeong-yeon

Aunt Gong Joo

Yoon Chan-young

Park Ri-Hwan (15 years old)