K-Drama Review: A Dark and Twisted Story of High School Students in ‘Extracurricular’


Netflix Drama Series – Extracurricular

Extracurricular (인간수업; Ingansueop; lit. Human Class) is a South Korean teen, crime, thriller, and action drama series produced by Studio 329. It was released on Netflix on April 29, 2020. Extracurricular was directed by Kim Jin-min and written by Jin Han-sae. It consists of 10 episodes in total with approximately running times 44–72 minutes per episode. In this article, Channel-Korea will provide you with a review of the Extracurricular drama series. Stay tuned!

Extracurricular: Review


Oh Ji-soo (Kim Dong-Hee), a fifth-half of Gyewang High School, lives a perfect double life as a schoolboy and a systematic criminal after school. Then by chance, he looking over the window and falls in love with Bae Gyu-ri (Park Joo-hyun). While Ji-soo interviewing with the homeroom teacher, he is invited to join the social problem study group. Unfortunately, the social problem study group has only Bae Gyu-ri, and the relationship begins.


In the second episode, there is a scene of Bae Gyu-ri’s family doing breakfast. The parents have a Western breakfast with eggs and bacon, but Gyu-ri only has given a glass of healthy juice and saying that she needs to take care of her body. She usually lives as a student who responds to the pressure of her parents to study, make friends and play a role as a businessman ‘s child.


[SPOILER] Near the ending, Looking at how Lee Hae-gyoung’s investigation and the main characters’ criminal activities will be dealt with, there are three people who know about the crimes of Ji-soo and Gyu-ri: Min-hee, Ki-tae and Mi-jung. Mi-jung is not going to testify to the police because she covered Dae-yeol with everything and took her foot out, but Min-hee and Ki-tae are likely to testify to the police.


You better watch the full episodes because it’s really tense in every episode. Extracurricular are really recommended to watch because the plot twists and the storyline are really interesting, intense, and marvelous.



Extracurricular: The Casts


Main Cast

  • Kim Dong-hee as Oh Ji-soo: Oh Ji-soo is a second-year student at Gyewang High School. Virtually an orphan whose parents have left home and have no financial support at all. Unlike Bae Gyu-ri, he’s a real outsider. He is a model student at school, but outside of school, he’s full of secrets.
  • Jung Da-bin as Seo Min-hee: Seo Min-hee is a student at Gyewang High School. He is dating a high school student, Kwak Ki-tae, who is the best second-year student. Seo Min-hee is a high school student who continues her double life like Oh Ji-soo.
  • Park Joo-hyun as Bae Gyu-ri: Bae Gyu-ri is a student at Gyewang High School and one of the most popular school insiders. She is nearly equal to a high school athletic club, which is difficult for female students to get close to because there are many close friends, regardless of grade or gender. Her parents are the presidents of renowned entertainment companies, and their homes are also high-rise luxury apartments.
  • Nam Yoon-soo as Kwak Ki-tae: Kwak Ki-tae is a second-year student at Gyewang High School, same as Oh Ji-soo. He is Seo Min-hee’s boyfriend. In conversation with friends, he seems to have been harassing his classmates since middle schools, like a gangster. Unlike Seo Min-hee, he is tricking information into a friend and pretending to apologize and escape. Although Min-hee does not seem to be financially dependent, he sincerely trying to do his best, making Min-hee insulted.

Supporting Cast

  • Choi Min-soo as Lee Whang-chul: Lee Whang-chul is Oh Ji-soo’s business partner. He is a former soldier. Unlike the three leading actors who jumped into crime for money, they don’t seem to have a lot of greed for money.
  • Park Hyuk-kwon as Cho Jin-woo: Choi Jin-woo is Oh Ji-soo and Bae Gyu-ri’s homeroom teachers are in charge of social studies and culture. He is the guiding teacher of the Social-Cultural research group, who started the relationship between Oh Ji-soo and Bae Gyu-ri. Among the main characters appearing in the opening, he was the only one not related to the crimes committed during the operation but he is had a hidden past.
  • Kim Yeo-jin as Lee Hae-gyoung: Lee Hae-gyoung is a police officer at Gyewang High School in women’s and youth circles. She has eight years of experience in the violent world. Unlike the Oh Ji-soo and Bae Gyu-ri’s homeroom teacher, Cho Jin-woo, who sincerely worries about his students, lee Hae-gyoung pretends to be Seo Min-hee and uses it for her investigation.

Another Supporting Role

  • Seo Ye-hwa as Sung-mi
  • Kim Yi-kyung as Ji-ye
  • Park Bo-mi as Min-joo
  • Jang Se-rim as Eun-chae
  • Kim Gyu-tae as Lim Tae-woo
  • Kwon Han-sol as Hye-min
  • Woo Da-bi as Soo-ji
  • Kang So-hwi as Na-eun
  • Lee Jae-baek as Kang-bbang
  • Choi Joon-gyu as Chae-bin
  • Kim Byung-hwi as Tae-nam
  • Park Ho-san as Jung-jin
  • Shim Yi-young as Gyu-ri’s mother
  • Kim Young-pil as Gyu-ri’s father
  • Baek Joo-hee as Cho Mi-jung
  • Lim Gi-hoong as Ryu Dae-yeol
  • Kim Kwang-kyu as Byung-kwan
  • Lee Seung-woo as Kyung-shik
  • Oh Kwang-rok as Jae-ik
  • Lee Hyun-gul as Du-gi
  • Cheon Dong-bin as Jung-hwan

Guest Roles

  • Jin Hye Won as a barista (Ep.1)
  • Kim Byung Hee as Tae Nam (Ep.1-2)
  • Kwak Hee Joo as Tae Rim (Ep.4-5)
  • Choi Dae Hoon as Mr. Choi, the CEO of Heaven Entertainment (Ep.4-5)
  • Oh Gwang Rok as Jae Ik (Ep.9-10)
  • Kim Mo Bum U