A couple of fight scenes, one humorous and the other more serious and resulting in some mildly-bloody flesh wounds, but both pertinent to the story and adds signifcantly to the plot.
Alcohol, Drugs & Smoking
Mild
Characters drink while out to dinner
Less drinking than other Korean romance / drama / comedies, but there is still some, with a couple of scenes of characters getting significantly drunk.
Frightening & Intense Scenes
None
The series is frighteningly awesome. Other than that, there are several very emotional scenes / tear jerkers.