The sub-par production is really unfortunate in this show. I actually find the low detail and crudely lined background shots/characters jarring. I had to watch the episode twice to better understand what, exactly, was going on, but once I did I had a much better appreciation for the direction the story is going in. Clever plots, logical thinking, and enjoyable dialogue (as translated by Horriblesubs) are doing a better job of holding my attention than the animation, which is sadly rare in anime nowadays.