Luke Halliday writes:
"Alien 9 is an anime series that is definitely not for everyone. In fact this is a series that isn’t for many people at all. This is the type of anime that requires an open mind. It looks cute, but it is dark and filled with violence. It looks cheerful but it is deeply depressing. It is truly a case of “don’t judge a book by its cover”.
Misery is the what’s on the menu for Alien 9 and it finds some pretty inventive ways of conveying an abyss of despair. It does things that you probably will not see in any other anime series, which is probably a good thing for other anime to be completely honest. Despite all the creativity behind Alien 9 there is two things that it sorely lacks: purpose and focus."