Only One Magazine

Jin Youngwon, an unregistered sentinel, locked away his powers after a traumatic first experience. However, he now has to join a special military division where he gets reunited with Myung Haejun, a capable A-class guide captain who once helped him before. Despite his decision to never use his powers again, pressure from above him as Haejun sends him to train Youngwon in combat. One day, an air raid siren comes into action, reactingivate Youngwon’s buried trauma buried seven years.