Crash Course in Romance

Jeon Do-yeon

Nam Haeng-seon

Jung Kyung-ho

Choi Chi-yeol

Lee Bong-ryeon

Kim Yeong-ju

Oh Eui-sik

Nam Jae-woo

Shin Jae-ha

Ji Dong-hui

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

Kim Kwon

Instructor

Lee Kyeong-uk

CM director

Kim Jun-won

Seo-jin's husband

Gu Bon-jin

Building security guard

Yoon Seok-hyun

Song Jun-ho

Jeong Hyeon-woo

Teacher

Kim Mi-ra

Audience student's mother

Kim Min-cheol

Choi Chi-yeol (teenager)

Kim Jung-don

Handball coach

Choi So-yul

Nam Hae-e (child)

Kim Mi-kyeong

Haeng-seon's mother

Hong Lu-hyeon

English teacher

Shin Seung-yong

Police officer

Seol Chang-hee

Doctor

Oh Ki-hwan

Staff

Lee Hyeon-seo

Student's mom

Yu Jun-a

Student's mom

Lee Yun-sang

Mr. Yang

Lee Mi-yun

Mr. Yang's wife

Jeong Hye-kyung

Meat vendor

Park Hyo-bin

Kwon Jin-gyeong

Hong Seong-gwan

ChiYeolSucks group member

Lee Min-goo

ChiYeolSucks group member

Park Seon-a

Su-hyeon's mom

Kim Geon

Su-hyeon's brother

Lee Yong-i

Noise complaint woman

Son Sang-gyu

Math King

Kim Seon-kyeong

Nation's Best Banchan customer

Jeong Eui-soon

Education director

Park Yong-su

Dr. Nam Goong-chan

Son Seong-chan

Choi Jeong-an

Bae Yoon-kyung

Hong Hye-yeon

Lee Su-mi

Restaurant owner

Kim Jin-gu

Landlord

Hyeon Jin

Judge Yoo

Shin Young-jin

Hotel restaurant manager

Min Woo-gi

Real estate agent

Lee Dong-hyeon

Woorim High School student

Park Yu-mil

Questioner

Lee Sang-yi

Livestreamer Mr. Popular

Park Sang-hwi

Han Tae-hwa

Lee Jin-hong

River bank passerby

Park Sang-hyeok

Detective

Oh Min-jeong

Nation's Best Banchan customer

Kim Gyeong-min

Triple Top executive

Lee Ji-hye

Veterinarian

Yun Bu-jin

Vegetable vendor

Jeon Jun-woo

Prosecutor

Park Joo-yong

Delivery man

Park In-chun

Judge

Jang In-ho

Nam Dae-nam

Ma Jeong-pil

Doctor

Ahn Soo-ho

Jeong Chan-ki

Bae Hae-seon

Nam Haeng-ja

No Hui-jung

Protesting parent

Go Gyeong-man

Protesting parent

Jung Min-gyeol

Dae-geun's girlfriend

Jeong Seung-jin

Seong-hyeon's ex-classmate

Choi Ga-in

Student's mother

Kwak Ji-sook

Chi-yeol's neighbor

Seo Dong-hyeon

The Pride Academy staff

Kim Si-young

Teacher

Park Sun-young

Teacher

Han Ye-ju

Consultation general manager

Park Hui-jeong

T&A Law Firm staff

Kim Il-hyeon

Nation's Best Banchan customer

Ji Yeon-ae

Protesting parent

Lee Jeong-ju

Photographer

Sin Yu-bin

T&A Law Firm staff

Im So-yun

Lee Min-ji

Do Ye-joon

Barista

Lee Yeon

Haeng-seon (Teenager)