Back when I was a kid 12+ years ago I watched an anime that I have been trying to find for a few years. Storyline was pretty much monsters are attacking people and cities and trying to bring back the balance between nature and technology/polution. Main guy caracter would grow blades out of his arms to fight and was himself a ``monster`` and he was there to protect a girl who could stop the conflict. I`m sorry if the discription is bad but it was a long time ago. Now I`m trying to find the name of the show.

Hope you guys can help me