Duty After School (Korean: 방과 후 전쟁활동) is a 2023 South Korean streaming television series starring Shin Hyun-soo, Lee Soon-won, Im Se-mi, Kwon Eun-bin, Kim Ki-hae, Kim Min-chul, Kim So-hee, Kim Su-gyeom, Kim Jung-lan, Moon Sang-min, Shin Myung-sung, Shin Su-hyun, Shin Hye-ji, Ahn Da-eun, Ahn Do-gyu, Yeo Joo-ha, Oh Se-eun, Woo Min-gyu, Yoon Jong-bin, Lee Yeon, Ji Min-hyuk, Choi Moon-hee, Hong Sa-bin, Hwang Se-in round out the ensemble cast. Based on the webtoon of the same name by Ha Il-kwon, in which later published as webtoon on Naver Webtoon. It aired from March 31 to April 21, 2023, on TVING's Fridays at 16:00 (KST). It is also available for streaming on Viu and Viki in selected regions.The series was divided into two parts: Part 1 aired on March 31, 2023, and Part 2 aired on April 21, 2023.