>>3689184GuP is an absolutely fantastic show I'd recommend to anyone. It's not like "deep" or "artistic" or anything, but it knows that and it doesn't try to overstep its bounds. Just a fun show with cute girls and an enjoyable plot.
As for Andou, she's only in these last two das Finale short films that have been released. But there are a couple other brown girls in GuP, like Hoshino and Suzuki.