Fiona Urd Elgraif, also known as Fiona Urd Alegreif, is a princess of the Urdwaite Empire. She is frequently referred to by the informal title of Holy Princess or Holy Imperial Princess, a nickname originating from the circumstances of her birth rather than any official religious position. She was born as the result of a scandalous affair between the emperor and a priestess of the central temple. Her mother, who passed away shortly after giving birth, was a descendant of the Prophetic Priestess, a figure known for prophesying the birth of a hero or demon king once every few hundred years.

Fiona’s personality is characterized by a constant, calm smile and an unshakeable, powerful demeanor, even when faced with delicate political or personal situations. She possesses a natural charisma and an unusual level of emotional balance and political skill for someone of her age. This allows her to maintain control over those around her, often using her charm to influence people. For example, she took a liking to Gly Lamprogue, playfully calling him her sacred knight and manipulating his behavior with her natural charm.

Her primary motivation and role in the story are driven by her unique ability to see the future, a power inherited from her mother’s bloodline. The futures she envisions vary in certainty; some can be altered by minor events, while others appear to be completely unavoidable no matter what actions are taken to prevent them. She uses this clairvoyance, combined with her considerable political acumen, to resolve numerous internal conflicts within the empire. This has allowed her to amass significant political influence, despite being an imperial princess without a powerful backer at court. Her deep interest in the protagonist Seika Lamprogue and the hero Amyu stems from having foreseen an unavoidable future in which they are critically involved. She persistently tries to involve herself in their affairs and repeatedly asserts that she is their ally, even though Seika constantly maintains a skeptical attitude toward the validity of foresight.

Fiona’s key relationships are centered on her connection to the main cast. She expresses a strong desire to meet Amyu, the recognized hero of the era. This wish is made during a stay at the Lamprogue residence and prompts Seika, along with his companions Yifa, Amyu, and Maybell Crane, to return to their hometown for the first time in two years. Her dynamic with Seika is particularly significant. While he remains distrustful of her claims of foresight, Fiona continues to approach him with the insistence that she is an ally. In the original source material, hints of a strong, significant past relationship with Seika exist, and details regarding her history and personal feelings toward him are explored more deeply.

Regarding her development, Fiona appears from the third volume of the original light novel onward. In the anime adaptation, her appearance is advanced, making a debut at the end of the second episode. Physically, she is depicted as a teenage girl with long blue hair reaching her waist and pink eyes. Her notable ability, clairvoyance, is her primary tool for anticipating both political dilemmas and personal challenges. She has demonstrated the capacity to use this gift to navigate the difficult circumstances of her birth and establish herself as a figure of high influence and respect, often handling political and personal setbacks with the maturity and skill of a true leader.