OVA
Description
Loveriel is a celestial being who intervenes during a demonic attack on Rika Manabe and Naoto Jinno, identifying herself as an angel locked in the eternal conflict between heavenly and infernal forces. Injured and weakened after battling the demon Asmodeus, she recruits Rika as her replacement, granting her the power to transform into the warrior angel Djibril. This transformation requires intimate human interaction to generate the vital energy called Amore. Loveriel provides guidance to the human protagonists, frequently referencing instructional materials detailing transformation mechanics and combat capabilities.

Though physically resembling a child, Loveriel is ancient, documented as 10,009 years old. Her behavior often aligns with her youthful appearance; she seeks to be carried, engages in playful deception targeting Naoto, and displays moments of immaturity. She remains a continuous presence throughout the series' narrative, residing with Naoto and offering support to successive Devil Angels beyond Rika, including Naoto's sister Hikari Jinno and the artificial entity Nagi. Her role evolves from combatant to coordinator, notably founding an educational institution for Devil Angels in later installments.

Her involvement extends across multiple dimensions and timelines. She transports characters to a parallel Sengoku-period Japan, integrating them into historical conflicts while they retain their core identities. Later, adapting to technological change, she establishes a cyber-based academy within a digital realm. There, she recruits new candidates like Momo Sakura, Aoi Ayonokouji, and Yuzuha Hoshikawa to combat demonic threats, marking a strategic shift in the conflict.

Loveriel persists as the sole consistent character across all major storyline iterations, enduring even as other primary characters retire or are replaced. Her longevity and sustained relevance underscore her pivotal function within the overarching narrative connecting the series entries. Her actions consistently drive the recruitment and mentorship of new defenders against infernal forces across all temporal and spatial settings.