Nice 80's Sci-fi movie.
The soundtrack is nice and it has some good, colorful designs, specially the tiny doctor inside the robots head and the big flying heads.
There are some ambitious scenes that, unfortunately, are marred by budget animation..
The story doesn't make much sense, it one of those cases that you have to have read the manga to get the whole picture, but it's not a big problem since it's more centered in the audio-visual experience.
If you've seen most of the well known 80's movies and are looking for more, Ai City won't disappoint you!