If you've just stumbled upon this drama, I would advise to instantly watch it. If you think you would find a comment that doesn't have all 10 stars, it doesn't exist.

OST-
Can I just say, *It's perfect* I cry everytime I hear a song from goblin, either nostalgia or just because song is so good. You should definitely check the song separately.

ACTING-
I like main characters acting, it was light hearted and she was a cutie. She delivered the innocence, and maturity at the same time. The male leads acting was great as well, but I mean it's Gong Yoo. I also loved the Grim Reapers acting, cold yet cute.

PLOT-
It's really good, with many romance plots yet mysteries and tragedies. Side plots were also great. The plot will make you happy yet cry at the same time.