Firstly i must say this anime is simply breathtaking. The story is quite original, the animation is superb and the dialogue is beatifully writen therefore the entertainment value is also up there.
I won't go into any actual details about the anime but i will say that suprisingly it has become one of my favorites ( me being a shoune/seinen/ecchi fan), it's THAT good.
The most apealing element of this anime is the range of emotion, throughout 12 episodes it makes you feel love, hatred, jelousy, angst, joy, happiness etc.
I think this is a must see for any anime lover out there, be it a naruto fan or a clannad fan. Enjoy!