CNBLUE Lee Jong Hyun A Gentleman's Dignity- I think - Lee Jang Hyun from CN Blue who plays -Colin - was a second male lead in this and it would have been interesting if they developed that story line more.
Good Doctor, is about an autistic savant, Park Shi-On, who has the mentality of a ten-year old. However, his genius capacities coupled with an exceptional memory, eventually lead him to want to become a pediatric surgeon. Unfortunately, his autistic tendencies create conflicts in the O.R., especially with the lead surgeon. Despite warm-hearted and fair colleagues, it’s a fierce and competitive environment, and soon he faces another challenge - he begins to fall in love with Yoon Seo.