Mark Tuan, the first son of the Tuans family. The familys pride and joy. The bright star and the heir of the Tuans Enterprise. Park Jinyoung is his shadow. Wherever Mark goes, Jinyoung would always follows. Foreword   Shadow: (ˈShadō),n. A dark shape that appears on a surface when someone or something moves between the surface and a source of light. An area of darkness created when a source of light is blocked.   they have always wondered what Mr. Tuan meant by shadow      Poster made by @pastiche- from denouement