Characters : Park Eun ah ( OC / YOU ) - You have a boyfriend named Kwon Ji Yong , you two loved each other , made a vow that someday you two will face the altar to exchange " i do's " but fate seems harsh for the both of you .. Kwon  ji Yong ( GD ) - Your boyfriend, whom you really loved, the one that accepted you for who you really are, .. the one who love and under