This one was a fun, light-hearted drama - it's a rom-com so that's to be expected. I watched it because of Yamashita Tomohisa - I recently watched Buzzer Beat and really enjoyed it so I went looking for other dramas he's done and found this one. I think the main thing that kept me from enjoying it more is Ken and Rei themselves. As I watched their past unfold, I often found myself wondering exactly when he decided he was in love with her - because his past self apparently either didn't have a clue or suffered very much from young and stupid, and they seem to have spent their entire childhood quarreling. (he even says at one point that he truly was the worst or something like that). And Rei, in order to cover her own feelings, is often kind of mean to Ken (which she finally admits at the end of the series). This is one of those dramas that is fraught with misunderstandings, missed moments, miscalculations and missing common sense - so sometimes I was left wanting to strangle the two of them. So, fun to watch, but know you're probably in for some frustration too - if you don't mind that, go for it and enjoy :)