The Sleepless Princess is a very good drama with a unique story. The drama has a good number of plot twists to keep the viewer interested and the action scenes are well done. The leading couple has very good chemistry that developed in a natural way; their emotions and feelings for each other were well played. The drama has an alternate ending as episode 36 (available on YouTube: eng sub The Sleepless Princess episode 36); although it is a bit comical and not that impressive, it is nice to watch. Enjoy it!