The biggest flaw of Korean BLs is their lenght. They put a lot of stuff on the table but don't take the right time to develop anything.
The scenes pass from one to the other without a real connection just to speed up the plot and that's a real shame. I hope to see a 16-episode K-BL soon with episodes lasting at least 45 minutes like classic kdramas.
If you have already watched the thai version you can't help making comparaisons and, even though the basic story is the same, there are a lot of differences in managing the plot that almost make of them two completely different series. The lack of sexual tension in the Korean version is balanced by the astonishing acting when it comes to showing the feelings.
While I watched the thai version only for Tutor/Fighter storyline, in this Korean version I enjoyed Jung Lee Won story the most because it felt like the K versions of Zon and Saifah did justice to their relationship and somehow filled the gaps of the thai plot.