The story is completly original. It is very rare to hear or watch a series with such a plot as this one.There was much humour at the right times. Humour at the wrong times is a definete NO NO.
It was incredibly enjoyable to watch it. The story has situations that i, personally, feel at the current time and have felt. I get a better understanding of the characters best when i feel or have felt what they are feeling in the story.
I say, share this show with your friends and definetly read the manga. The art in the manga is much more beautiful then that of the anime.

The entire series was well thought out, brainstormed, and well organized. How the events work their way blending into eachother was amazing.This is very rare to see in new anime.