Druaga no Tou: The Aegis of Uruk - Jil no Bouken
English name: Tower of Druaga: The Aegis of Uruk - Jil's Adventure
Genres: Adventure, Fantasy
Type: Special, Episodes: 1
Aired: Apr 4, 2008
Studio: Gonzo
Source: Game
Rating: PG-13 - Teens 13 or older
Synopsis:
This is a special "back-side" (ura) episode aired on GyaO simultaneously with original broadcast which features the background story from party's side instead of Jil's. 

(Source: AniDB)