Time to bring this thread back from the dead.

Okay, I just started this season because it scores generally well, and WOW I was amazed. I wound up marathoning it over the past week.
I have to ask, WHY did Sei get her hair cut? After she did that I could barely stand to see her anymore.

Oh, and +1 to the character development in this series! I despised Touko up until fourth season, then I found myself cheering for her. Sheer awesome.
Anyone know odds on 5th season or another group of OVAs? I couldn't find anything on ANN or the interwebz.