Ahaha, I get to beat NeoSam this time.
The cover for vol.9 of the novel, to be released on 9/25, has been uploaded:
The subtitle is 「双月の舞踏会」 (Futatsuki no Butoukai, Ball of the Twin Moons) (ball as in a formal dance).
Considering it's going to feature Henrietta's "big comeback" (
) I was hoping for a cover with her, or maybe one of Miss Bust Revolution. Too bad.