I would come out and say that this is one of the better anime shows currently airing on Netflix. As an avid fan of horror and mystery, I felt that this show resonated with me and kept me anxious and anticipating. This show suffers from a lot of things happening at the same time that you start to lose track of a few key plot lines. But it does not lose traction and the climax is satisfying enough to tie all the loose ends towards the end of the last episode. The characters are some of the most well written ones in recent anime history. The two main characters, Kieth and B aka (Thirteen) have enough depth to them to make the audience feel their despair. Kieth in particular battling his past and inner demons in search of the truth reminded me of Spike Speigel of the Cowboy bebop fame. The way he is laid back and the complex decisions he makes through out the series is almost similar. I got cowboy bebop vibes when ever Kieth was on the screen. The other characters Lily and the two main antogonists of the show are no slouches either. You genuinely feel their motives and the force that drives them. I would give the characters 10/10.
As a big Anime fan, I felt that this show ticks all the boxes. Production was really good, animation and soundtrack were expertly executed and to top it all off the story was really engaging. What more can you ask for.