It's frustrating, because the season has several great scenes and the basic core has always been solid: anxious and insecure Retsuko working a menial office job, trying to find love and using death metal as an outlet for her pent-up rage. Combine that with some typical modern day life issues, bad co-workers and employers, demands from family, and so forth, and you have plenty to take from – without having to get too outlandish with the plot.
Instead of focusing on Haida and Retsuko and giving closure to any side-characters and plots, you have new side-characters and plots (and the plot-focus of the last three or so episodes was ridiculous and came out of nowhere). By the end, I didn't feel much closure, but more like they'd wasted my time.
