81 Episodes felt like 1 episode. I'm lost for words, it's incredible. Listen, this is the best drama of all time (read this review and you'll know why). I was really touched. STORY - Absolutely sensational! From the start he's a guy who is really immature but he goes on to be a huge hero! What can I say really? the writing is perfect, it keeps you on the edge of your seat, every episode is interesting. The character development is brilliant, well done to the writer. I'm just speechless. ACTING/CAST - Great directing, great acting = Materpiece. everybody had character developments and did portray their own role really well, outstanding. Standing ovation to them, to the staff and to the director who managed to get the best out of the cast. MUSIC - I liked it, it added a + to the touching scenes , very good. OVERALL: I could write soooo many things but I'm currently speecless as I said. This is just the greatest drama of all time in K-drama land. Some of you need to stop wathing romance dramas and watch this drama that is acted by heart and passion. I'm crying !! Don't let the length of the episodes scare you. peace.