Afterschool War ActivitiesBang gwa Hu Jeonjaeng Hwaldong; Duty after School; Afterschool Military Activity; Afterschool War Activities; Школа; Фронт; 방과 후 전쟁활동; 방과 후 전쟁활동 (하일권); Мектептен кейінгі майдан

Strange things are appearing from the sky, and the world is slowly dying. In Korea, there aren't enough military men to fight these enemies off, and high-school and college students have no choice but to join the military and help the others survive - at the risk of their own lives. Original webcomic