Tower of Druaga: The Aegis of Uruk - Jil's Adventure
Druaga no Tou: The Aegis of URUK - Jil no Bouken · ドルアーガの塔 〜the Aegis of URUK〜 「ジルの冒険」
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)
Studios: Funimation, GONZO
Source: VIDEO_GAME