Synopsis
When the secret occult group Shiromorishuua attacks by unleashing a massive beast on Tokyo, the Japanese peacekeeping organization ASY counters by deploying a Gousen (metal fairy). The ASY Gousen manages to force the monster out to sea and destroy it. But after this initial success, a new threat appears: a floating girl glowing with light who fires a devastating energy beam. This mysterious figure is known as "Rouran." She has no memory of her true identity, her origins, or why she transforms into a vengeful angel whenever she detects a Gousen or Kyoushi (reanimated corpses). While Rouran grapples with understanding her enigmatic past, Tetsuya offers her care and support in Tokyo Arcadia, a sanctuary for exiles and dissenters.
