Lugh

18 years old, height: 160 cm, measurements: B 82/W 55/H 83. Her specialized magic is Radiant Magic (Ildanach). Her "Archive" is Envy (Invidia), and her "Theme" is Sincerity (Faith). Additionally, she has reached Trinity by mastering the use of Mythical Armaments with the Demon Lord's Factor, acquiring the themes of Courage (Virtus) and Liberation (Solvo).

She is a member of the Gospel Exploration Society (Ish Kariot) who studies the speed of light and fights with body techniques so fast they are nearly invisible. She serves as a secret technique investigator. She wears a kimono-style outfit and covers her right eye with an eyepatch to view the world in a flat perspective as part of her research. She refers to herself as "this unit."

Despite her calm and collected demeanor, which allows her to analyze her opponent's combat abilities even during battle, she struggles with emotional expression to the point of reading laughter in a monotone and has a natural side that sometimes fails to grasp the meaning of words. Nevertheless, her combat abilities are undeniable, as she can corner Levi head-on and claims to be the "second strongest mage in the world." Although primarily a mage who uses body techniques, she also possesses area attacks that rain down countless lights and magic for super-speed movement. She has a technique called Post-Spell, where she casts magic first and chants afterward, and she has a wide array of Mythical Armaments.

After being defeated in a battle with the Trinity Seven, she was forgotten by Master Liber and captured with a magic-suppressing restraint on her neck. However, she escaped during the battle with Abyss Trinity and returned to the Gospel Exploration Society on her own.

She has a weakness for treasures and owns many Mythical Armaments, including the "Light-Piercing Spear Brionac," "Light-Cutting Sword Fragarach," and "Light Sword Wing Claíomh Solais," stolen from the Celestial Library, as well as the "Light Magic Gun Tathlum" and the "Primordial Treasure Dionȳsos." In a side story, she obtained the "Scale of the Death Dragon" during a skirmish with Koshin Ryuki, the second-generation Twelve Demon Generals, Dragunazzo, which later became a catalyst for Dragunazzo's resurrection when the Twelve Demon Generals were controlled by Arata. Due to her ability to fly, she is often relied upon by Levi in battles.

Though details are unclear, she has also mastered the martial art of light, "Light Martial Arts (Savil Danach)," separate from the magic of light, "Radiant Magic." By switching her eyepatch to cover her left eye instead, she can almost perfectly mimic and reproduce techniques she has experienced.

Her true identity is a descendant of a biological weapon known as a "Divine Being," created by granting the "God" factor to humans during the Great Mage War. Due to this trait, she can ignore all restrictions related to the acquisition themes and archives set for each Mythical Armament, fully mastering an extraordinary number of them. Although her raw combat ability is inferior to the "Heavenly Arbiter," she can exhibit arbiter-class power for 10 seconds if enhanced by Liber's magic.

As a descendant of the Divine Beings, who are believed to have no survivors, she has little experience interacting with people. Sei, whom she met about six months before the main story begins, has become a precious friend to her. Therefore, when Faunalia and others insulted Sei during their visit to the surface world, she showed intense anger alongside Liber.