The Innocent Man [K-Drama] (2012)
Summary : A classic melodrama involving betrayal, revenge, and romance. The story is about Kang Ma Roo (Song Joong Ki), who gave up everything for the woman (Park Si Yeon) he loves only to be betrayed by her. To get revenge on his ex-girlfriend, he uses her step-daughter and successor to Taesang Group, Seo Eun Gi (Moon Chae Won). Unfortunately, she suffers brain damage and loss of memory after a car accident, and now Kang Ma Roo works to fix everything that went awry because of his blind sighted revenge and ends up falling in love with Seo Eun Gi.