“Duty After School” Kdrama 2023 | Cast | Synopsis | Preview & more

Overview: “Duty After School” Kdrama (also known as “Afterschool Military Activity”) is a TVING original drama series that released on March 31, 2023. It will tell the story of alien invasion on Earth and school students are trained to fight the alien invasion war. “Duty After School” stars Shin Hyun Soo, Lee Soon Won, Im Se Mi in the main cast. It is available to watch online on streaming platform Viki* and TVING*.

duty after school poster Korean drama

Table of Contents

  • Synopsis
  • Genre
  • Cast
  • Air Time & Schedule
  • Episodes & Ratings
  • Still Cuts
  • Notes & Facts
  • Where To Watch Online?
  • Trailers & Clips


“Duty After School” Korean drama tells the story of alien invasion on Earth and school students are trained to fight the alien invasion war.

It is only 50 days left for students to give their university entrance exams that an announcement comes from the Presidentof South Korea which says that the students must go through military training in the school playground. They need to learn how to fight and shoot in their school uniform. This order has come due to weird eggs falling from the sky which  hatch into violent insect-like creatures that attack humans. Platoon Leader Lee Choon Ho and Sergeant Kim Won Bin come to the high school to train these students. They are very strict with the students but, deep down they care a lot about them.


Thriller, Action, Sci-Fi, Coming of Age

Main Cast & Characters

  • Shin Hyun Woo as Lee Choon Ho
  • Lee Soon Won as Kim Won Bin
  • Im Se Mi as Park Eun Young

Supporting Cast

  • Kwon Eun Bin as Yeon Bo Ra
  • Kim So Hee as Lee Soon Yi
  • Kim Jung Lan as Park So Yoon
  • Shin Soo Hyun as Cha So Yeon
  • Shin Hye Ji as Choi Yeon Joo
  • Yeo Joo Ha as Kim Yoo Jung
  • Oh Se Eun as Hong Joon Hee
  • Lee Yeon as No Ae Seol
  • Choi Moon Hee as Lee Na Ra
  • Hwang Se In as Yoo Ha Na
  • Kim Ki Hae as Kim Chi Yeol
  • Kim Min Chul as Do Soo Cheol
  • Moon Sang Min as Wang Tae Man
  • Kim Su Gyeom as Kwon Il Ha
  • Shin Myung Sung as Im Woo Taek
  • Ahn Da Eun as Kim In Hye
  • Ahn Do Kyu as Kook Young Soo
  • Woo Min Kyu as Kim Deok Joon
  • Yoon Jong Bin as Jo Jang Soo
  • Ji Min Hyuk as Jo Young Shin
  • Hong Sa Bin as Woo Hee Rak
  • Ro Jong Hyun as Jang Young Hoon
  • Lim Se Mi as Park Eun Young
  • Lee Jang Won as Maths teacher
  • Yoon Da Kyung as Yeon Bo Ra’s mother
  • Yoo Dam Yeon as Kim Chi Yeol’s mother
  • Jang Hyuk Jin as Kim Chi Yeol’s father
  • Shim So Young as Kook Young Soo’s mother
  • Kim Do Yeon as Kim Deok Joong’s mother

Air Time & Schedule

New Episodes every Friday

Episodes & Ratings

Korean drama “Duty After School” will have a total of 6 episodes.

Still Cuts


Notes & Facts

  • Shin Hyun Soo earlier starred in Korean drama “Bossam: Steal the Fate” (2021).
  • Lee Soon Won earlier appeared in Korean drama “The King of the Desert” (2022).
  • Im Se Mi earlier appeared in Korean drama “The Empire” (2022).
  • earlier starred in Korean drama “.” (20).
  • Adapted from the webtoon “Duty After School” (방과 후 전쟁활동) by Ha Il Kwon (하일권). Read in English Here.
  • Director: Sung Yong Il
  • Scriptwriter: Lee Nam Gyu

Where To Watch Online?

You can watch “Duty After School” online on Viki here.

Trailers & Clips

Episodes 1, 2, 3,……., Highlights

*Drama is subject to regional availability.