Bubble Gum

Lee Dong-wook

Park Ri-hwan· 16 ep

Jung Ryeo-won

Kim Haeng-ah· 16 ep

Lee Jong-hyuk

Kang Suk-joon· 16 ep

Park Hee-von

Lee Seul· 16 ep

Park Cheol-min

Kim Joon-hyuk· 16 ep

Bae Jong-ok

Park Sun-young· 16 ep

Kim Jung-nan

Oh Se-young· 16 ep

Park Joon-geum

Yi-seul's mother· 16 ep

Lee Seung-joon

Kwon Ji-hoon· 16 ep

Park Won-sang

Jo Dong-il· 16 ep

An Woo-yeon

Ye Joon-soo· 16 ep

Kim Sa-Kwon

Hong Jung-woo· 16 ep

Kim Ri-na

No Tae-Hee· 16 ep

Han Seo-jin

Kim Haeng-A (7 years old)· 16 ep

Go Bo-gyeol

No Dong-Hwa· 16 ep

Seo Jeong-yeon

Aunt Gong Joo· 16 ep

Yoon Chan-young

Park Ri-Hwan (15 years old)· 16 ep