Answer
Jang Keun-suk played the role of Seo In-ha in the 2012 South Korean television series "Love Rain". The series follows the love story of two childhood friends who are reunited years later as adults. Seo In-ha is a talented artist who is struggling to find his place in the world. He is also in love with his best friend, Yoon Hee-jin, but she is in love with another man.