Crash Course in Romance

Jeon Do-yeon

Nam Haeng-seon

Jung Kyung-ho

Choi Chi-yeol

Shin Jae-ha

Ji Dong-hui

Lee Bong-ryeon

Kim Yeong-ju

Oh Eui-sik

Nam Jae-woo

Roh Yoon-seo

Nam Hae-e

Jang Young-nam

Jang Seo-jin

Kim Sun-young

Cho Su-hui

Hwang Bo-ra

Lee Mi-ok

Heo Jeong-do

Kang Jun-sang

Lee Chae-min

Lee Sun-jae

Kang Na-eon

Bang Su-a

Ryu Da-in

Jang Dan-ji

Lee Min-jae

Seo Geon-hu

Kim Tae-jeong

Lee Hui-jae

Ji Il-ju

Jin I-sang

Lee Do-hye

Jeong Su-hyeon

Kim Da-huin

Jeon Jong-ryeol

Lee Ji-hae

Director Jeong

Park Hui-eun

Jin-su's mother

Choi Hee-jin

Young-min's mother

Yoo Jun

Lee Young-min

Jeong Han-seol

Bae Jeong-su

Hwang Jae-yeol

Detective Song

Jang Tae-min

Detective

Go Ae-ri

Jo Ga-yeon

Lee A-jin

Lee Hyo-won

Kim Gye-rim

Hyeon Seo-Jin