I Love thiss Drama very much.. I'm a huge  fan actually..
1. The Chemistry between two main leads was amazing (well they ended up marry in real life though)
2. The story line is not the usual action romance like other dramas
3. The pace of the plot is very fast, keep you wondering what next? Not typical slow pace drama with the unsolved problems/missunderstanding for several episoes
4. No crazy and jealous girl/boy
5. It's funny but also heartwarming scenes and conversation along the drama
I rewatch this several times and don't get bored of two leads chemistry and interaction
At fist I was rather hesitate to watch because the story about soldier and war never been my interest.. But ended up I was falling in love with this drama.,
If you haven't watch it.. it's highly recommended