Cluster Edge Specials
Japanese title: クラスターエッジ ~Secret Episode~
Alternative titles: Cluster Edge (OVA), Cluster Edge: Secret Episode
Type: Special
Source: Unknown
Episodes: 3
Status: Finished Airing
Aired: Sep 22, 2006
Duration: 23 min per ep
Rating: PG-13 - Teens 13 or older
Licensors: Sentai Filmworks
Genres: Action, Fantasy, Sci-Fi
Themes: Military

Three specials released with DVD volume 9 of the TV series.

Episode 1: The Day of Gathering
Past event about Chalce and Chrome's group, of how the three youngest members came to join them. 

Episode 2: White Footmarks
Past event about Chalce transfer into Cluster E.A, his meeting with Hema and how he elicted the hatred from the competitive Vesuvia. 

Episode 3: Wings of Freedom
A strange girl appears in Cluster E A, looking for Fon. Is she there for a visit or something else? Will she find her answer amongst Fon and his friends? 

(Source: Wikipedia)