Movie
Description
Master Liber functions as Paladin Class Headmaster of the destroyed Royal Liber Academy and serves as a key operative within the antagonistic organization Iscariot. Her true nature identifies her as one of the Heavenly Arbitrators of "Holy," bearing the title "Archbishop." Persisting since the Great Magic War, she ranks among the oldest active Arbitrators, extending her life by transferring consciousness into successive mortal vessels. This ancient existence informs her archaic speech patterns, contrasting her youthful appearance: a petite frame standing 146 cm tall with measurements of B74-W56-H77, characterized by pink hair ending in curls and piercing red eyes.

Her personality merges playful respectfulness with strategic detachment. She engages in lighthearted banter with allies, such as Master Biblia, amidst combat scenarios involving their students, finding amusement in conflict. Underlying this demeanor lies an arrogance tied to her status, occasionally flaring into anger when insulted. Her core motivation aligns with Iscariot's objective to end the Demon Lord cycle, yet she acknowledges adversaries like Arata Kasuga's latent potential, deliberately encouraging his development even while opposing him.

Liber's magical prowess centers on Summon Astrology, enabling the conjuration of star spirits or the Evil God Army for combat and divination. She utilizes Summon Ars Paulina, a future-prediction technique demanding her blood as a catalyst, which inflicts physical damage with prolonged use. Access to parallel worlds is achieved via Umr at-Tawil, a portal-opening magic named after Lovecraftian entities. When significantly weakened, she transforms into an adult form using her subordinate Lugh's blood, amplifying her summoned entities and healing injuries. This adult state facilitates God Man Composition, temporarily elevating Lugh's combat capabilities to Arbitrator level through light swords and accelerated movement, though it risks reverting Liber to her childlike form after 10 seconds.

Her significant actions include orchestrating the capture of Hijiri Kasuga following her defeat, repurposing her as an anti-demon weapon against Arata. She later oversees Arata's progression during a magical tournament, confirming he could reclaim Hijiri by winning, while also revealing his opponents would include Lugh and the weaponized Hijiri. Throughout these events, she collaborates with fellow Arbitrators like Master Akasha, observing battles and discussing strategic concerns such as Arata's unstable Demon Lord powers and the implications of Anastasia-L's spirit-based existence.

Her extensive backstory involves interdimensional research that earned her the "Archbishop" title after successfully summoning the Evil God Army. She once maintained a friendship with the previous Ceres, who sealed the Great Demon Lord. As headmaster of Liber Academy prior to its destruction, the precise timeline of her joining Iscariot—whether before, during, or after the academy's fall—remains undetermined.

In spin-off media like *Liese Chronicle*, her adult form exhibits amplified power, particularly through enhanced Evil God Army summons.