First  i didnt know Netflix had anything in the k drama division. But it was a very nice surprise. It has a nice comedy/ romance/ time travel story. It is nice to see something with a nice twist
 Second not going to give any spoilers but its a not so serious drama, episodes are half hour so you can really enjoy it. the pace in certain moments were a bit fast but never had that slow pace where you have to jump scene (yes there are some where you just hate that they drag it). The ending was perfect even though they could have cut out some of the flash backs and opted for more reunion in future and past. Overall it has a very good balance of quirkiness and cute.
 Its just a good drama to simply watch just to pick me up.