The action and fighting sequences in this show are very well done. There is the occasional FX that is clearly TV budget quality, but overall the production quality is high and all the hand-to-hand fighting is choreographed with delightful intensity.

I love this show. Does it have it's faults? Yes. It undeniably drags a little in the second act as it runs around chasing political intrigue when all you really want is to see the Counters go kick some more demon butt (or get theirs kicked, the show handles both scenarios great). There are also way too many scenes where bad guys are sitting around just talking about things, taking precious screen time away from the much more interesting main cast. BUT I can overlook it's flaws because they are far overshadowed by its strengths.

I think there are two distinct areas where this drama shines. One is the very well handled action sequences and undeniably pulse-pounding moments of peril, defeat, and triumph. The other is the incredible beauty of the show's main set of characters, brought to life by a super talented cast. Mun is the perfect protagonist for this show, managing to put the sweet in cinnamon roll without coming off saccharine as he surges and stumbles through relatable struggles and missteps along the way to powering up and figuring out both what he can do, and how to use it. Hana, Motak and Maeok too are all beautifully acted characters who you get to see slowly transform from enjoyably quirky stereotypes to layered, fleshed out individuals with their own stories and struggles to uncover. I particularly enjoyed Hana's character development and how you slowly start to see what's behind her protective walls. Also - MAN can that gal fight!! I really appreciate how she is so very competent and skilled and yet still manages to have vulnerabilities and struggles that pull you in and make you worry and root for her. She is high on my list of favorite kdrama leads.

The found family aspect of this show is beautiful and heart-warming, and extends beyond just the main cast. I really enjoyed the relationships between Mun and his friends, and his grandparents as well.

Overall, I'd say this was a compelling, relatively unique drama that takes hold of your heart and never lets go.