What a disappointment!
Summary: It's a shame because this show had such a cool premise. A 300 years old soul chasing his soulmate through three lifetimes, is finally in a position to finally be with his beloved but then is shocked to find out that the woman he loves has reincarnated in the body of a man. Drama ensues. (How cool is this idea?!)

Plot: The show takes this really interesting concept and does NOTHING with it! It wastes the entire potential. There's no development of the romance, the conflict is never developed or solved, it's just...gone. There's a freaking meaningless love triangle that does nothing. It's just so sloppy. There's not much more to say.

Acting: It was almost okay but Jeon Chang Ha is just bad at acting. Jin Gun almost survives but not really? They're both really rookie and wooden and their chemistry is not there at all and it all looks cartoonish and exaggerated when they try too hard. Especially since the script just gives them absolutely nothing to work with either. Song Han Hee is the only saving grace, acting-wise.

Music and rewatch value: No.

Production: Bad. It looks like they filmed the whole show, every set of it, in a hotel apartment?! Like a really cheap one that students on their gap years with a budget would only go to. No set design worth a dime, no proper lighting. It's like a young filming student's class project that he filmed with his friends.

Overall: Don't waste your time watching this. You'll only get depressed at the wasted potential of what could've been. This could have been so good and it just wasn't. It barely functioned.
Better luck in your next life, soul!