First things first, I write this review out of mere spite and am thoroughly disappointed with this season, so I'm going to be brief. Six episodes of the fourth season of Hell Girl are completely new and in every way a "Hell Girl" worthy episode. The last six on the other hand, are RECAPS from seasons 1, 2, and 3. Except for short 2-3 minute skits in the beginning of each episode, the episodes that follow that are copy and pasted from early seasons and are not worth watching. I have a very good memory and I can say with confidence that these episodes are the same down to the T.
The series should have stopped by episode six because this is the last one with exposition relevant to this season and the fact that they(the studio) had to rely on old episodes to make that 12-episode contract work is the lowest of the low.
I would have been okay with rewatching the episodes with the new Hell Girl replacing Ai, but unfortunately they couldn't even be bothered to do that and so this concludes my review.
(Based on the first 6 episodes)
Story - 6
Art - 7
Sound - 8
Character - 3
Enjoyment - 4
Overall - 3