단, 하나의 사랑

Shin Hae-sun

Lee Yeon-Seo

엘

Kim Dan

이동건

Ji Kang-Woo

김보미

Geum Ni-Na

도지원

Choi Young-Ja

김인권

Angel Hoo

우희진

Jung Yoo-Mi

이화룡

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]

박원상

ballet company director

김기무

Dog stealer