This is the first series I've so far watched where I disagree with the high rating and can't really understand it. This series did not meet my expectations at all, although it is not completely without merits. Animation is better than average and visually there are nice artistic choices from the director throughout. Music is mostly solid and often atypical in a good way. The setup is also very interesting and the story could go in multiple exciting directions.
Unfortunately the writing is all over the place, it never reaches the heights the setup would allow and steadily degrades throughout the series. The first arc of 10 episodes is OK-ish and manages to keep things mostly interesting, but it's a bit uneven and ultimately unrewarding (6/10). The second arc of 9 episodes is much less interesting, it's convoluted and detached, and starts to rely on miraculous events and characters acting in non-characteristic and illogical manner (4/10). And in the third arc every last ounce of logic is thrown out the window and the whole thing implodes into an utterly non-sensical puerile mess (2/10). Just like a good ending can uplift a story, the last arc is so bad it soils the whole series, making the total experience even worse than the sum of its parts.
I learned afterwards that this has originally been a visual novel with multiple routes and endings. This somewhat explains the many tonal and logical oddities of the plot and character continuity, but is no excuse for them; many good examples of similar adaptations exist. I wish I had stopped watching this after the first arc, the rest of the series was a complete waste of time.
