Also known as: ミニスカ宇宙海賊, モーレツ宇宙海賊, Bodacious_Space_Pirates
A 2008-2014 light novel Science Fiction series by Sasamoto Yuuichi, with illustrations by Matsumoto Noriyuki, published by Asahi Shinbun's Asahi Novels imprint. Also adapted into a 2012 anime by Satelight, as Mouretsu Pirates (モーレツ宇宙海賊), a.k.a. Bodacious Space Pirates.