PROS:
- strong start
- adorable leads, great chemistry & emotion
- beautiful music
- Shin Hye-Sun's outfits and appearance
- ballet scenes
- acting overall

CONS:
- weak second half (except for last two eps)
- flat (two-dimensional) side characters
- predictable ending
- nonprogressive storyline
- too many back and forth scenes

It was an okay drama, I liked it mainly for the leads' chemistry and especially Shin Hye-Sun's screen presence. L as Dan was surprisingly cute. However, somewhere around the second half I felt like the story wasn't really moving forward. The focus had shifted from the female lead's path and ballet to...yeah, well that's the question. The ending was nice, but couldn't compensate for the lacking second half.