I don't know why this show doesn't have higher rates. Seriously that goes easy to my top 10. It has everything I like in a show. I don't know if it's some personal preferences but I simply loved everything about it.
I even like it better than other famous top everyone likes dramas like Goblin, for instance.
I see here the right amount of comedy, romance, and a good plot to back it up.
Some shows I watch give relationships the main spot of the history, and something happening around, but with the main focus in the relations itself, usually romances. Those are romance focused, and others have a more twisted complicated histories, main focused, so the romances and relations get a little bit grayed out by it.
I can say, most of the dramas are that way. I'm not complaining, just stating a fact. But not this one. This drama had the right amount of everything entangled, a good twisting plot behind a beautiful romance, with the right amount of cliches(not too much, but enough to warm our hearts xD), in a so subtle way, we don't even notice it.
No, no second lead syndrome crap bad written romances have. (I'm second a lead syndrome hater hahaha )
Just pure love, with hints of fantasy, tragedy and comedy . An Odyssey after all.

Soundtrack(i'm getting ready to download it), the cast, the chemistry the leads had, the leads itself, I liked everything about it.
Some reviews I've read said that at some point the history got dragging, like they were filling it, like they were delaying it so they could make it longer. At some point, if I recall I can say that happened, but it wasn't like I wanted to skip it, so I could know what really happens (like I do in crappish dramas, I just go on skipping so I don't lose my time ove it hahaha). It was fun! That's why I can't complain about it. T
I really had fun watching this. I recommend it to everyone who enjoy fiction and fantasy like I do.