Yes I did actually finish watching this one!
"Yamashita Tomohisa and Nagasawa Masami play a young man and woman who have been friends since elementary school. Yamashita's character, Iwase Ken, is obstinate and unskilled in love, but he fell long ago for the lively and cheerful woman, Yoshida Rei, played by Nagasawa. But Rei is about to get married to another man. While Ken and other friends from high-school attend the wedding ceremony, a fairy appears and sends Ken back in time, giving him a second chance to win the girl he loves."
Yamashita Tomohisa (Nabuto wo Produce, Dragon Zakura, Kurosagi) plays the part of the useless guy (Ken) who you end up wanted to knock out cold because he is so useless at saying anything of use to Rei (Nagasawa Masami - Dragon Zakura), but what is interesting is that you follow the characters through different intersections of their life (high school, University and beyond) and you see Rei change and develop as a character as she gets older - of course its the same actor and all that, just they put more effort into the script.
While you see Ken try his best to "make a difference" to the present by trying to make his mark on Rei in that segment of his past. What makes this show interesting is that he doesn't always get things his own way, and even ends up giving up towards the end and that's when you can tell there is nothing more he can say to Rei to change her mind.
But you can see with each time travel he is making subtle changes to the present Rei's affections towards him and some of his friends are changing too.
The last few episodes have twists aplenty and even I was gasping when episode 9 finished, and his contrasting actions in episode 11 were completely unforeseen.
This series is a very low key romantic story which has the viewers willing Ken on in his bid to change the present, I feel this is one that will stay timeless due to its completely unusual story.
I would recommend everyone watches this series at least once!