This article is about the woman appearing in Frieda's storybook. For the 104th Cadet Corps graduate with the same alias, see Historia Reiss (Anime).
Christa (クリスタ Kurisuta?) is a young lady from a storybook that Frieda Reiss read to Historia Reiss.
Christa has light colored hair and is often shown holding an apple.
Christa is described by Frieda Reiss as very "lady like" who is always nice to everyone.
In her childhood, Historia used to read about the story of Christa with Frieda. When Historia asked Frieda what is it like to be "ladylike," Frieda replied to be like Christa from the story.
- Christa is in the cover of the book Historia Reiss used to read when she was a child.
- Christa can be seen at the beginning of Season 2's Ending Theme, Yuugure no Tori.