Kanon was adapted from a video game released in 1999. It was adapted in manga in 2000 and then in anime in 2002. Kanon 2006 is the second adaptation of the manga. It was released in 2006 with better chara-design and more episodes than its predecessor.
Summary of the Manga Kanon:
Yuichi Aizawa comes back to live with his aunt after many years being away. He meets his female cousin of whom his memories are somewhat fuzzy. Yuichi seems to remember little or nothing from his childhood city, except the coldness of course. His encounters might be coincidences, but every one of the girls he meets look like they hold a secret…
My opinion on the manga Kanon:
Kanon 2006 was one of the first animes I ever watched and as such, it holds a special place in my heart. Not only because it was one of the first, but also because its story has reached me like few did before. You can easily describe this anime as a Slice of Life one. But it has something more, this anime has a soul, a screenplay that will leave you hanging for more. Most Slice of Life animes end up doing and telling nothing, when you can feel that Kanon has a real purpose.
If you are trying to start watching animes and do not really know what to watch, I would recommend Kanon. Unless you’re a thirteen year old boy who needs an adrenalin rush, you should be charmed by Kanon 2006 and have a good time all the way. The progression can seem a bit slow but it is only an impression. Every twist will make forget about that small time you thought you waited to get to it. That waiting moment will actually make it more enjoyable as you thought it could have been in the first place.
What else can I tell you except that the music was intensely beautiful ?