I can understand you - it was like this at the beginning...
at first you think: wow awesome what an idea to think of
- and then: what's this? where's the story?
But rest assured - it will get better! (i really think so, because the whole setting, acting and so on is really good - i don't think someone who can write a story like this would like to see this drama go on an neverending journey -.-; )
--> reasons to watch more of this: there are some really action-packed scenes in the following episodes *.*, his condition is not as clear as you maybe thought, the female police officer and our "hero" are as cute as ever - and: he seems to be getting much more responsible for his actions, then before (little spoild kid is getting -a bit- more mature)