히든페이스

송승헌

Sung-jin

Cho Yeo-jeong

Su-yeon

박지현

Mi-ju

박지영

Hye-yeon

박성근

Office manager

차미경

Sung-jin's mother

변중희

Ms. Park

박영준

Deputy concertmaster

주예린

Su-yeon's friend

이소영

Su-yeon's friend

Koh Na-young

Su-yeon's friend

손은호

Su-yeon's friend