Slow pacing good Sci-fi, mystery, thriller but not for action; The plot is unique and It has good animation too but less action than expected. Mystery is the only thing that will keep you engaged in the anime despite of less action. Anime failed to show the actual strengths of mainstream characters/robots (ex. Atom, Hercules, Gesicht etc..) only 10% of action you will see in the last 2 episodes. there are many emotional and heart-touching moments with beautiful BGM. I would say a good watch but not for everyone it has slow pacing though but you will enjoy it if you like sci-fi, mystery,thriller genres...