leave their perches on message boards and mobile phone networks, and apathy and self-centeredness are slowly breeding a newer, scarier "me" generation. This raises the question: are the "invaders" an insidious hidden enemy, as some characters believe, or simply the manifestation of abhorrent human behavior?" Anime News Network criticized the show's theme, saying that the humor from the original Gate Keepers may have given it a good name and its dark theme just "isn't very entertaining". Helen McCarthy in 500 Essential Anime Movies commented that the anime "has a fascinating idea at its roots - the aliens feed on human selfishness." References External links 2002 anime OVAs Drama anime and manga Geneon USA Gonzo (company) Science fiction anime and manga