Originally Posted by something
I can certainly say this show is nothing like what I would have guessed.
Agreed. This episode took it from just being an amusing, cute Shinbo comedy to actually being really intriguing. It probably the new series that I look forward to the most this season (though admittedly I've only watched three or four shows from the season).
A lot of times it feels like show like this typically have some of the explanation bogged down with techno/spirit babble, but everything really came together. Though it's like you said, it feels like a three episode ova that's come to an end.