Nothing much, just wanted to make the rating higher and at the top of the list, because this is the first time I spammed a whole series in a mere 2 days.
Story from episodes 1 to 15 were fantastic, episode 16 was a little weird, however the previous episodes made up for it.
Most dramas always tend to die down after episode 11 or so, where things start to slow down, or they finally confessed their love etc, however for this drama, it was a fantastic ride from start till end.

Just watch it, don't waste anymore time besides the 16 hour marathon