Seungwoo and Seungyoun are colleagues who have worked as bodyguards for a long time and they are very close. But they both have very different personalities. Seungwoo who looks very firm, scary, and intimidating. He rarely talks and mostly listens to his co-worker Seungyoun. His gaze was extremely cold and sharp. Seungyoun has a gentle, affectionate gaze. He is very easy going and talks a lot especially with Seungwoo. He is very caring and kind.