I am glad this arc is done as well, I didn't hate it as much as others but i do agree that slave stuff dragged on too long. It felt like a long S&M nightmare lol.
At least Kazuya did learn a few great techniques. I really wish we focused more on that fine wizard chick and the other strong people who taught him instead of the slave stuff.
Anyway Just glad its over, That fat Bitch took way too long to die and I'm glad the wrap up was fast too. I didn't much care for that world anymore and really can't stand the cat Bitch even now and wanted her gone for good. Don't care of her reasons she is still horrible.
Looking forward to the next arc and hope that it centers around the main story a little more instead of a side quest.