Please Save My Earth is a very gentle yet tragic exploration of the power of destiny and personal struggle. While there is some outstanding action scenes towards the end of the 6 episode OAV, the series revolves around the development and destruction of the main characters. The plot itself is intermingled with a metaphysical look at the deceptive appearance of innocence and the desperate and destructive poison of love. While some may find the plot slow-moving, to others (more accustomed to shoujo anime) the story is very intense and involves very tragic and touching descriptions of personal dreams and even pride. Throughout the series there isan environmental sub-theme. I find myself wishing that the anime creators had included more of this element, as there was lots of content to support a more Arjuna-esc tale. However, the romantic revelations in PSME are enough to carry the series through to Excellence.
The music by Hajime Mizoguchi and Yoko Kanno is outstanding, though it may not appeal to all viewers. I think it was a perfect mix of sci-fi and primitive sounds. Akino Arai's Prologue: Time of Gold Flowing is a beautiful track and has a very tragic tone to it.
Please Save My Earth has the most hateable and lovable characters. If you cannot get wrapped up in this teenage romantic fantasy then perhaps a closer evaluation of your previous lives is necessary. This touching journey makes my top 10 anime without a doubt as the series took me on a journey of classical and unrivaled romantic fantasy.