A black dragon who becomes Fia's familiar

Fia always dreamed of becoming a knight. Born into a family of knights, she’s the least talented among them, but she still clutches to her hope and trains with everything she has. When the day comes for her to slay a small demon and prove her worth, she ends up face to face with a dragon instead! A deadly injury makes her life flash before her eyes…and she suddenly remembers her former life, when she was a powerful Saint in a bygone era who defeated the Demon King. That life ended in pain because of who she was, making her fear ever becoming a Saint again. Now that the magic from her previous life has been rekindled, she may become a more powerful knight than she ever dreamed–if only she can survive long enough!
 
(Source: Seven Seas Entertainment)

Born into a family of knights, Fia has always dreamed of following the path to knighthood too, except she’s the least talented of them all. On the day of her initiation test, a deadly injury prompts her life to flash before her eyes…and reveal her former life as a powerful Saint who defeated the Demon King in a bygone era! Her painful death as a Saint made her swear she’d never accept sainthood and its dangers again. But now, with her saintly power returned, Fia has the chance to be a more powerful knight than she’d ever dreamed—that is, if she can last long enough
 
(Source: Seven Seas Entertainment)

Fia always dreamed of becoming a knight. Born into a family of knights, she’s the least talented among them, but she still clutches to her hope and trains with everything she has. When the day comes for her to slay a small demon and prove her worth, she ends up face to face with a dragon instead! A deadly injury makes her life flash before her eyes…and she suddenly remembers her former life, when she was a powerful Saint in a bygone era who defeated the Demon King. That life ended in pain because of who she was, making her fear ever becoming a Saint again. Now that the magic from her previous life has been rekindled, she may become a more powerful knight than she ever dreamed–if only she can survive long enough!
 
(Source: Seven Seas Entertainment)

Zavilia