Tensei shita Daiseijo wa, Seijo de Aru Koto wo Hitakakusu

Fia, born into a family of knights, desperately strives to prove herself despite her lack of talent. Her dream is tested when she faces a dragon instead of the small demon she was assigned to slay. Critically injured, Fia's life flashes before her eyes, triggering memories of her past life as a Saint who defeated the Demon King. This past life ended in pain, making her fear a repeat of her previous fate. Now, with her Saintly magic rekindled, Fia has the potential to become an incredibly powerful knight. However, she must learn to control her abilities and survive the dangers of her current life, all while concealing her true identity. The series explores themes of self-discovery, the burden of power, and the struggle to overcome past traumas.