I'm not sure why this drama is rated at a 6.3 - it definitely deserves at least a 7, so I am giving it a 7.5 and rounding it up to 8.
This drama is pretty straightforward in its story line and plot, its nothing too complex or crazy, but that does not mean it fails to entertain. I was fully engaged for every episode (except the last). The main couple have crazy chemistry, and Bok Su is a wonderful, fun, and charismatic main character who is a delight to watch. The soundtrack was absolutely wonderful, and it was overall a satisfying watch. My only complaint was the last episode was a bit dragged out, and there was an odd camera style during some scenes where the characters looked directly into the camera during really dramatic moments, which was a bit uncomfortable as it felt like a 4th wall break, but it wasn't.