An alien invasion disrupts the attention of the high-school senior students who were mobilized and trained under military command to become reserve forces against the emerging creatures. They were just normal teenagers who were supposed to be focused on passing and getting to a university, but were forced to fight over something adults should have responsibilities for. A Duty After School K-drama fanfiction. Oc x Yeon Bora (gxg) Oc x Im Wootaek (bxb)