First of all, I have to say that I'm an anime only and I haven't read the manga. I've only seen one other series by Naoki Urasawa and that is the anime of Monster.
So going into this blindly, I expected something similar like a realistic psychological crime story. But what I got was something completely different and it's honestly hard to believe that these are two mangas written by the same author. It's a science fiction that takes place in the future with a lot of fantasy elements, such as extremely advanced technology like robots and artificial intelligence on the level of or even more developed than humans. That was definitely a nice change and just proves that Urasawa is a genius of a mangaka who can write very diverse stories. The only thing halfway similar is the murder mystery aspect of the story, but I definitely loved that.
This anime had some interesting themes like the never-ending cycle of hatred. It's also very emotional with hard hitting deaths that almost made me cry for literal robots. Every episode is interesting and has some nice moments, but no episode is even close to the level of the masterpiece that is the last one.
That final episode is one of the greatest TV episodes I've ever seen. It has a plot twist on the same level of Attack on Titan, which absolutely shocked me. And that final fight had me on the edge of my seat the whole time as it's just pure craziness and emotion. It's genuinely the greatest finale that I've ever seen in any anime and this is not an exaggeration. I'm just so glad to finally see another very well executed ending. Most endings that I've seen felt kind of unsatisfying.
Overall, I really enjoyed this fairly short show and it was an incredible experience. The only thing I disliked was the animation of environmental elements like tornados and explosions. The studio used too realistic CGI for this that just looks a bit odd compared to the 2D animation.
