Who Joon
Lee Geun-young
JJ / Choi Jae-joon
Oh In-hyung
Go Soo-hwan
Mi-Jung
Seo Ji-hyang
Han Jae-won
Noh Do-yoon
Bae Young-seok
reporter
Who Joon’s Music Producer
JJ's Brother
Shin-hyuk
Ra-ra
Gang-yeon
Assistant Producer
Jo Hae-yoon
JJ's Investigator
