Plunderer manga volume 3 features story and art by Suu Minazuki.

Class is in session, as the crew starts up military school life! Schmerman lays out the rules, and the stars, on the table, which indicate...their right to stay at the academy?! No wonder stars are being stolen left and right! School's keeping Rihito and the gang busy between that, a peeping incident in the women's baths, and the more serious internal conflict over their becoming soldiers and having to kill-but what'll happen when a certain higher-up from the academy overhears Rihito's declaration that doesn't want to kill anyone?