“Babylon” named like this for a certain reason. The Tower of Babel was destroyed by God so that people could not unite. If people unite, then nothing will stop humanity before achieving its goals. In our case, the “bad god” is the character Ai Magase. Looking ahead, I will say that this is a kind of dystopia. Probably will not live up to your expectations.
Plot
It is worth dividing the plot into 2 parts. First is giving a birth to primordial evil and second one – analyzing it by overthinking. Do you know what “evil” is for you? You’ll face the opposite case anyway in this story. The link between the middle and the end is too stretched by the story of “The Thinker”, and it seems to me that it is too odd to put the thoughts of one person under the "absolute truth" flag.
Characters
There is a balance of the life time of each character, for which they manage to reveal the character, but too short to be imbued with feelings.
Summary
A work worth watching, at least for revealing problems of the modern society and its diseases.