Crash Course in Romance [Russian]

Jeon Do-yeon

Nam Haeng-Seon

Jung Kyung-ho

Choi Chi-yeol

Lee Bong-ryun

Kim Young-Joo

Oh Eui-Sik

Nam Jae-woo

Sin Jae-ha

Jeong Seong-hyeon

Sin Jae-ha

Ji Dong-hee

Jang Young-Nam

Jang Seo-jin

Kim Sun-young

Jo Soo-hee (Soo-ah's mother)

Hwang Bo-ra

Lee Mi-Ok (Dan-Ji's mother)

Lee Chae-Min

Lee Seon-jae

Roh Yoon-seo

Nam Hae-Yi

Lee Yeon

Nam Haeng Seon [Teenager]

Ryu Da-Bin

Jang Dan-Ji

Kim Min Chul

Young Choi Chi-yeol

Lee Min-Jae

Seo Geon-Hu

Kang Na-eon

Bang Soo-Ah

Kim Da-hwin

Jeon Jong-Ryeol

Jeong Han-Seol

Bae Jeong-Su (Detective)

Kim Tae-Jung

Lee Hui-Jae