We all know that the reincarnation stories is one of the most common ones on k-drama but even though, this one managed to make yet a unique plot over this Type and they made it well perfect on my opinion, me personally I've finished it on the same day become the story flowing was too smooth and perfect especially the first 4 episodes and with a real good message the result was a great series.
And the cast did their job just right especially seo in guk.