The Umesato Junior High Local Network has been seized by an enigmatic figure, who has ensnared students and divested them of their clothing and possessions. As news of the same occurrence in other schools surfaces, Kuroyukihime rallies the troops of Nega Nebulus – one of the Seven Great Legions – including Haruyuki Arita, in order to untangle the mystery. Intermission A recurrence of a physical evaluation looms over Haruyuki – a test that, if he fails, will preclude his participation in any more territorial conflicts with Nega Nebulus. In a bid to secure their "Silver Crow," he is aided in his effort to shape up before the examination by Chiyuri Kurashima.