omg this is definitely the best drama I've ever seen . Perfect acting , perfect cast ( Lee Byung hun and Kim tae hae) and the Story is so original and unpredictable .. it gets better by each episode , it's really touching. I love how the characters evolved .. and how nothing is like you expect it to be. Until the last minute , you can't really predict the ending. what's more , the chemistry between the main leads is amazing. it's worth every second!