I really love this drama. It is really well made historical drama, with vampire lore, which is very well done, as the main villain (the vampire Gwi) was absolutely incredible, as much as Lee Joon Gi in the main role. It was some small weaker spots and so at times, but I think it was partly because its slightly older drama and it could've been two episodes shorter, maybe. I enjoyed the main story and most of the scenes, the chemistry between main leads was good and the OST was really great. The ending was satisfying. Cleary a happy end if you watch properly, but it leaves some space for imagination, for after life as well. For me, definitely worth watching for anyone who enjoys historical drama and fantasy elements.