At the beginning it looks to be an intense action packed anime, dealing with freewill, moral values, and existential ambiguity. After couple of episodes plot becomes barren with romance between two 12 year looking characters. Anime starts hurling on love affection that seems to be rushed, as a audience i did not feel invested. All the philosophy is only touched and left in the background.
Plot holes are abundant. Many questions stay unanswered and one has to accept forcibly. I just could not bear to watch it full but I think I haven't missed much.