Romance Is a Bonus Book

Lee Jong-suk

Cha Eun-ho· 16 ep

Lee Na-young

Kang Dan-yi· 16 ep

Eugene Jung

Song Hae-rin· 16 ep

Wi Ha-jun

Ji Seo-joon· 16 ep

Kim Tae-woo

Kim Jae-min· 16 ep

Kim Yu-mi

Ko Yoo-sun· 16 ep

Kim Sun-young

Seo Young-a· 16 ep

Cho Han-chul

Bong Ji-hong· 16 ep

Kang Ki-doong

Park Hoon· 16 ep

Park Gyu-young

Oh Ji-yool· 16 ep

Oh Eui-sik

Hong Dong-min· 16 ep

Lee Kwan-hun

Lee Seung-Jin· 16 ep

Choi Seung-yoon

Bae Kwang-soo· 16 ep

Lee Ji-won

Hong Jae-hee· 16 ep

Choi Da-in

Young Kang Dan-yi· 16 ep

Lee Ji-ha

Hae-rin's Mother· 16 ep

Lee Seo-hwan

Hae-rin's Father· 16 ep

Lee Ha-eun

Chae Song-yi· 16 ep

Choi Eun-kyeong

Ji Yul's mother· 5 ep

Kim Ji-hyun

Interviewer· 4 ep

Park Seoung-tae

Yoo Myung Sook [Novelist]· 3 ep

Lee Kyeong-uk

Ji Yul's mother's secretary· 3 ep

Song Yeong-jae

Nam Won Suk [Pureunmaeum Book Publishing president]· 3 ep

Ro Jong-hyun

Ji Yul's boyfriend· 2 ep

Hwang Se-on

Kim Na Kyung [Eun Ho's ex-girlfriend]· 2 ep

Cha Soon-bae

Drunk man· 1 ep

Shin Hye-jeong

Eun Ho's ex-girlfriend· 1 ep

Park Yu-rim

Eun Jung· 1 ep

Kim Kang-hoon

Cha Eun Ho [Young]· 1 ep

Lee Do-hyun

Mr. Park [Writer]· 1 ep

Yoon In-Jo

Yoo Sun's friend· 1 ep

Choi Ga-in

Yoo Sun's friend· 1 ep

Kim Nan-joo

Yoo Sun's friend· 1 ep

Choi Jung-hoon

Street Busker· 1 ep

Kim Do-hyung

Street Busker· 1 ep

Geum Bo

Blind date man· 1 ep

Oh Kyung-joo

Kim Myung Soo [Blind date man]· 1 ep