Ken, a guy obstinate and unskilled in love has a crash on his childhood and best friend Rei, who is about to get married to another man.
The wedding ceremony is interrupted by a fairy that allows Ken to travel back in time through high school and university living again his every-day life with Rei and their best friends.
Sooner Ken discovers that changing the present is more difficult than expected and even if they get closer, confessing his love becomes harder.
Will Ken be able to express his feelings and change the present avoiding Rei's wedding and eventually marry her?
Although the story is nice and Tsuru character (Ken's friend) is really enjoyable, all the others are flat and Ken's lack of courage sometimes is so irritating that I rooted for the other guy