Following their battle, Mamori and Mirei are restrained by two other Liberators. While Mirei is locked away in a disciplinary room, Mamori wakes up in the care of Kasumi Shigure, commander of the Wärter, who explains that all the girls on the island are carriers of something called the Armed Virus, who are divided into Extars, who can transform into weapons, and Liberators, those who can wield them...