there's one kissing seen in the end of episode 7 and one in the last episode that's all

Shows wounds after breaking glass

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.

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.

The series is frighteningly awesome. Other than that, there are several very emotional scenes / tear jerkers.