TV-Series
Description
Luceria is a viscount-class demon summoned by Kaito Takagi from a rare servant card, making her the second summoned being to join his party. She appears as a young girl with dark and silver hair tied into twin ponytails, pointed elfin ears, black bat-like wings, a black demon tail, and a lolita-style black and red dress. Her background as a higher-ranking demon gives her a natural place of authority among summoned beings, though her rank also comes with a demanding and prideful temperament.

Her personality is blunt, foul-mouthed, and openly selfish, traits she casually explains as typical of demons. She is quick to complain and often demands magic cores, which she consumes greedily. Despite her abrasive exterior, she develops a genuine attachment to Kaito, acting in a tsundere manner—she seeks his attention and approval, becomes jealous when he is absent from dungeon exploration, and eventually accepts the nickname "Luce" from him. Her motivations center on enjoying her time with Kaito and satisfying her craving for magic cores, though her loyalty slowly grows beyond mere transaction.

In the story, Luceria serves as a powerful magical asset to Kaito’s team, specializing in magic that melts enemies. Her combat style is destructive and sometimes difficult to control during battles, displaying excessive force against monsters. She brings darker, more complex magic compared to the warrior-focused Sylphy, and her addition marks Kaito’s shift from a single-servant user to a multi-member party leader.

Key relationships include her rivalry with Sylphy for Kaito’s affection and recognition, which is playful but competitive. She views Kaito as a master and father figure, seeking his praise and attention. Over time, she learns to integrate into Kaito’s unconventional family and to direct her destructive abilities toward protecting her companions rather than acting purely on whimsy.

Notable abilities include her signature melting magic, which can dissolve enemies, and a skill known as the Beauty of Gluttony, which consumes some of Kaito’s health to temporarily raise his status; the effectiveness of this power depends on the trust between them. Her development centers on moving from a selfish, demanding demon to a more cooperative and devoted member of the party, while retaining her sharp tongue and fierce independence.