Kikou Sennyo Rouran
English title: Strange Steel Fairy Rouran
Japanese title: 奇鋼仙女ロウラン
Type: TV
Source: Original
Episodes: 28
Status: Finished Airing
Aired: Nov 15, 2002 to May 30, 2003
Broadcast: Unknown
Duration: 12 min per ep
Rating: PG-13 - Teens 13 or older
Studios: Zexcs
Producers: Starchild Records
Genres: Action, Fantasy
Themes: Mecha

When the secret occult society, Shiromorishuua, sends a huge monster to attack Tokyo, ASY, a peace-keeping organization in Japan, retaliates with a Gousen (metal faery). ASY's Gousen annihilates the creature after driving it into open ocean. Although successful, a surprise attack follows. A girl, floating in midair and glowing with radiance, strikes with a beam of light. This girl is "Rouran." She knows neither her identity, her origins, nor why whenever she senses the Gousen or Kyoushi (reanimated corpses) she transforms into an avenging angel. As Rouran worries about her mysterious existence, Tetsuya kindly watches over her in Tokyo Arcadia, a settlement of expatriates and dissidents. 

(Source: AniDB)