Korean Drama " Heavenly Idol " is a fantasy drama about a heavenly priest who suddenly becomes an idol.
Right from the beginning, the drama doesn't take itself seriously and it continues with the light, silly mood till the very ending. Thus, the whole heavenly politics/battle of good and evil was set aside and was underdeveloped, especially since it wasn't easy to make the viewer care for them when the rest of the story is a comedy.
The romance was another part of the drama that was awkward. It could easily be omitted actually without any effect on the main plot, as the couple didn't have chemistry as lovers and were better off as friends. Not to mention that their romantic encounters were few.
Finally, the performances were enjoyable by everyone in the cast and the CGI good enough.
So, overall, four out of ten.