First let’s just review the drama itself without comparing it to the original.
This drama has a very original storyline that’s completely unpredictable. With hundreds of dramas under my belt I’m very good at figuring out what’s going to happen in a drama. But I would never have dreamed the reason why the male lead was seeing his future. So I give top scores for the very original storyline.
The romance is good with real kisses and lots of cuddles and cuteness. There’s a lot of push and pull between the leads in the beginning but it’s for very believable reasons. And the main leads have great chemistry.
This drama has lots of action with no dragging in the middle like some dramas tend to do. It’s well written with great acting and definitely worth the watch.

Now let’s compare it to the original:
(This is only for those that have seen the original drama. If you haven’t seen either version yet be forewarned it may contain spoilers and you might want to skip this part).
It’s rare when a remake is as good as the original but this one comes close. It followed the original almost exactly scene for scene word for word and only skipped a few parts. It’s very good and the acting is great! I have to say that this one may have been even better than the original if it hadn’t left out a few of my favorite scenes from the original Korean version. My favorite scene is where the friend is stuck hiding behind the couch while the main couple are all over each other celebrating their decision to get married. It’s just so funny and their chemistry is on fire. But this drama didn’t have that scene. It also skipped some cute funny scenes between the secondary couple (the male leads sister and the lawyer friend). Like the scene where she stops up the toilet and he saves the day. I missed that scene because it totally cracked me up. And in the original drama the male lead is furious at his friend for getting his sister pregnant which seemed more realistic to me. But in this one he just pats him on the shoulder. I felt that this drama wasn’t as good as the original. It’s still a really good drama. But it left out some of the best scenes that really made the show. And that’s a shame because the actors did a really great job. If you liked the original you’ll like this one too. It’s almost identical with the exception of a few scenes. Overall I’d say it’s a great drama worth watching even if you saw the original one.