So many twists and engaging story throughout all 18 episodes. I would have rated it high (8 or 9) if there weren't so many, and I really mean so many plot armour scenes, plot inconsistencies, probably the worst action choreography, one dimension-ally written FL & so many more similar frustratingly irritating reasons.

The ending is acceptable, since I have already seen Mouse by the same screenwriter, and was expecting an impractical but self-sacrificing & morally superior ending.

By far, my fav grim reaper related kdrama.

7/10.

PS. Some of the brilliant trolling comedy in episodes 2 & 3.