단, 하나의 사랑

Shin Hye-sun

Lee Yeon-Seo

L

Kim Dan

Lee Dong-gun

Ji Kang-Woo

Kim Bo-mi

Geum Ni-Na

도지원

Choi Young-Ja

Kim İn-kwon

Angel Hoo

우희진

Jung Yoo-Mi

Lee Hwa-ryong

Park Gwang-Il

Kim Seung-wook

Kim Ki-Cheon

이제연

Ki Joon-Soo

Gil Eun-hye

Geum Ru-Na

Yim Sa-rang

Soo-Ji

이도현

Moon Ji Wong [Fantasia's former lighting technician]

Lee Se-na

Lee Yeon-Seo's mother

이석준

Lee Yeon-Seo's father

Jang Hyun-sung

Jo Seung Hwan [Yun Seo's secretary]

Park Won-sang

ballet company director

김기무

Dog stealer