I went in with no expectations and I came out satisfied. Overall this movie was above average at best.
The story was well written for the most part, at least in the beginning, and the acting complimented it a lot. The actors helped portray the scenes greatly. The actors are very attractive as well, especially the female protagonist, Hae Won. It was somewhat realistic and had the right amount of romance. I noticed there isn't a lot of music but when there was, it made the scenes so much better and was appropriate.
There are a few times in the movie where things either move too fast or too slow. I got me off guard sometimes at how some scenes escalate too quickly.
I didn't exactly like the ending but I didn't hate it. For these types of genres, you just got make of what the ending is. But for the story, I could see how this could work.