Zhang Xiaowu, who was trained to be a perfect warrior, has been promoted to the youngest S-class mercenary. After gaining the power he craved, his adoptive father forced him to leave the battlefield.
Zhang Xiaowu, who was unwilling to retire early, was given a new task by his adoptive father.
"The mission objective is to find a girl from the public high school you will be attending and protect her."
Stimulated by the words "task goal", Zhang Xiaowu, who had a 100% task completion rate, accepted the task conditions.
Follow Zhang Xiaowu through his strange encounters and his high school life full of comedy every day.
Zhang Xiaowu's father: "Hey! Xiaowu, did you go to school on time?"
Zhang Xiaowu: "Yes, I arrived at the designated place on time."
Zhang Xiaowu's father: "Then why are you calling? You didn't kill anyone, right?"
Zhang Xiaowu: "I haven't used lethal weapons yet! The target I chose is in classroom 1-B, and my class is in classroom 1-A. Please ask the principal for permission to place me in classroom 1-B."
Zhang Xiaowu's father: "You bastard! Wait a minute!"
