A Tale of the Secret Saint

The story

Fia always dreamed of being a great knight, despite her lack of talent as a swordswoman. Then, a brush with death in battle awakens memories of her past life as the legendary Saint who defeated the Demon King. Her powers return, but so do the enemies who killed her once before. Fia vows to conceal her true identity to survive. But how can a knight resist using her powers to help those in need?