So I made a quiz from the episodes I've seen. Despite not having seen it, there is a Who is Imouto (Kono Naka ni Hitori Imouto ga Iru) question in there but that one pretty much wrote itself.
It's probable that Bodacious Space Pirates isn't what you expect. Based off the imaginatively titled Miniskirt Space Pirates light novel, this is not cute girls drinking tea in space. Well, not all of the time.
The series starts divisively enough by explaining the finer points of course plotting and the minutiae of electronic warfare between space vessels, hammering home the point with an encounter concluded through abstract blobs moving about on a computer screen and the futuristic equivalent of touch typing. It's an approach that nestles between the hard science-fiction of Sekai no Senki and the bombast of Nadesico.