My only expectation when I started this drama was a good rom-com, the show started off promising and ended up being one of the worse plots I have ever seen not trying to exaggerate at all, the plots were all over the place and the writer jumped from one plot to another, from one genre to another to create a totall mess.
I'm not a stranger to the main actor lee min ki and I always thought to myself how he always picked out good scripts
I have no idea why he picked this one, although I have never seen NANA's works I could tell she had good acting skills and the actors had the needed chemistry too but nothing could save this drama.
Then we have a second lead, he had little to no chemistry with nana and his character was the most useless you won't feel SLS in the slightest, one thing I enjoyed at some point was the story about their mothers, I actually have the last episode left to watch but I'm not even curious about the ending.
all in all I don't recommend this at all and this has to be one of the worst dramas I have ever watched.

UPDATE AFTER FINALE (spoilers on finale)
The ml disappears in the end (there's a plot about him being only able to live 49 days amidst a lot of other things) great a bad ending to a bad drama, i'm aware the leads dying isn't a bad ending but in this case, the whole drama was just really bad, if u dive really deep into the story and re-write 95 percent of this with the initial idea of the plot this drama could have been saved , if they wanted to show the ML'S development after only having 49 days to live even if they would make him die in the end there were a million better ways to do that but alas they failed miserably and to end this giving this a 4 is me being generous