Yahiro and the others journey to Kyoto aboard Galerie Berith's armored train. There, they hope to discover the truth about Japanese people having transformed into moujuu. The train screeches to a halt when soldiers stationed at Nagoya demand a toll-the Regalia: a crimson gem that is...fusing with Ayaho?! There's no way Yahiro or Iroha will hand her over, but how will they keep everyone else safe and escape a barrage of attacks from soldiers and moujuu?
Yahiro and the gang head to Kyoto hoping to figure out how to turn the Japanese populace back into humans. When Galerie Berith's armored train stops in Nagoya, the Chinese Federal Army, the current occupant of the former Nagoya Station, demands that the Galerie surrender Vanagloria's Regalia in exchange for safe passage. By that time, the powerful Relict has fused with Ayaho, and handing over one of Iroha's siblings is the last thing they'd do. Can they protect her, negotiate their way out of the situation, and defend against a herd of Moujuu all at once?