I honestly skipped this show for months and months because of the description sounding cheesy and a bit lame. I finally watched the series, and it is now one of my favorites. The parts in the description that turned me off were talking about her turning into a fan girl (she's not like that), and his amnesia sounding so cliche (it was actually very well written).
This is one of the sweetest romance shows I have ever seen. The premise is a bit sci-fi, buy they play it low key for the most part. By that I mean it's not a major plot point throughout most of the show. The OST was okay, not as beautiful as some others I have heard, but still a nice compliment to the show. The acting of the main characters is phenomenal. The only thing is I could have done without the cgi turtle.

Tone wise, this reminded me of Go Go Squid, Lucky's first love, and the Korean I am not a robot. It's a cute, sweet, rom-com that happens to have sci-fi elements to it. Don't be like me and skip this one!