Watching the interaction between Joo Hong-bin and Son Se-dong is so slow and I guess real...well I was so happy watching this - and my son also loved it - which made it more special family memory. The story has romance and humor and the best sci-fi out of the blue I ever saw. Blades appear from his body - and the progression of learning about his power is so well written. The butler/Secretary Go (played by Han Jung Soo - was amazing character, the glue of the romantic leads). Highly recommend this series; excellent subtitles. Loved seeing Korea though this series. (hated the bad guys!) Ha well written series.