Japanese

はなれ砦のヨナ

English

Yonna in the Solitary Fortress

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)