Hanare Toride no Yonna
English name: Yonna in the Solitary Fortress
Genres: Adventure, Fantasy
Type: Movie, Episodes: 1
Aired: Apr 8, 2006
Studio: CoMix Wave Films
Source: Original
Rating: PG - Children
Synopsis:
Yonna and Stan, brother and sister, live in isolation because of their special powers. There are enigmatic people who plot to use their power, in conflict with the king`s government, which is also planning to draw them onto their side. Intrigue surrounds Yonna, and now a new agent comes to see her.

(Source: AniDB)