

By Dramabeans
Lee Soo-hyun
Choi Young-woo
16
60 minutes
tvN
South Korea
Korean
Source: Wikipedia
Ahn Jun-ho, an actor under Star Force Entertainment (Ep. 3)
Do Soo-hyuk
Happy, a rookie singer (Ep. 2)
Jo Ki-bum
Oh Han-byul
Jin Yu-na
Han Seung-Il, a famous actor newly signed with Star Force (Ep. 4)
Baek Da-hye
Kim Jin-kyung, Entertainment Public Relations Manager (Ep.11)
Song Ji-hee, an actress (Ep. 7)
Byun Jeong-yeol
Do Ji-hyuk, an attorney and Do Soo-hyuk's elder brother (Ep.11)
An actress under Star Force Entertainment (Ep. 1)
Kwon Myung-hee
Gong Tae-sung Moon Seong-hyun as teenage Gong Tae-sung
Cha Min-ho, entertainment department reporter and Jo Ki-bum's ex-boyfriend (Ep. 6)
Eun Si-woo / Kim Bok-soon
Sung Woo-ju, CEO of Yoon Jang-seok's agency (Ep. 13)
Hong Bo-in
Ham Yu-jin, an actor (Ep. 5)
Park Ho-young
Kang Si-deok
Chae Eun-soo
Lee Jung-hoon (Ep. 8)
Kang Yu-sung
Choi Ji-hoon
Teenage Gong Tae-sung
Han Dae-soo
Yoon Jang-seok, an actor (Ep.13)
Park Jo-eun, Oh Han-byul's blind date partner (Ep. 1)
Yeo Ha-jin, an actress who was rumoured to be dating Gong Tae-sung in the past (Ep. 6, 8)