This show, as per title, is funny, but actually nothing very special. The story itself, even if I found the idea behind original and remarkable, looks a bit inconsistent some times, starting from the interaction between the ghosts and the humans, which sometimes looks incoherent, or the background story from the Silla-like time, which sometimes looks a bit much stretched. However, the above said originality of the story, let me go above the inconsistencies, eventually loving the two leads and the supporting characters. The key-points that I liked a lot are the evolution of the two leads' story as well as that sense of enlarged family of which all of them are part, transcending their natures of humans and ghosts. The relationships which come out as a consequence, are very nice, even if i would have preferred that a bit of time more would have spent to better define the stories of the ghosts' and the general's characters.
Anyway, the characters are generally all amusing and entertaining. To include the mean one who is an actual mean. The cast is well sorted, and well chosen, and the performers did a very good job, in entertaining the spectators.
Nice CGI, nice photography, good direction, OST not at all remarkable.