Then I realised something.
This has the same director as Sayonara Zetsubou-sensei. And the same writer as Saya no Uta and Fate/Zero.
And I watched the rest of the episode. And. AND.
IT IS LIKE BEING HIT OVER THE HEAD WITH A SOCK FULL OF MERVYN PEAKE'S DARKEST DAYDREAMS.
HIDAMARI SKETCH MEETS TITUS GROAN.
It's grim and disturbing and amazing and I hope it keeps up the first episode's quality (or even improves on it, since first episodes of anime series tend to be a bit bland).