In 15 years we've never been friends.
Friendship evolves into something more between two high school students: a playful chaebol heir and the diligent bodyguard who's always by his side.
Han Gi-chan
Jang Eui-soo
Choi Yeon-cheong
Chun Jae-young
Cheon Seung-ho
Jung Seo-in
