Luminous Valentine

Overview

Luminous Valentine is a major character in the light novel series That Time I Got Reincarnated as a Slime and its derivative works. As the True Ancestor of the vampires, she holds the fifth seat among the Octagram Demon Lords. She serves as the absolute ruler of the Holy Empire Ruberios and is the true identity behind God Luminous, the supreme deity worshipped by the Western Holy Church. To protect her vampire kin while maintaining human society, she governs humanity from behind the scenes through a structured religious and political hierarchy.

Appearance

Luminous Valentine takes the physical form of a beautiful young girl with long silver hair and heterochromia, featuring a red right eye and a blue left eye. She carries a cross accessory on her person. When concealing her true status, she frequently adopts maid attire, and her wardrobe incorporates dark dresses with ribbons, short sleeves, and high boots.

Personality

Luminous Valentine carries an aristocratic and proud demeanor, speaking in a noble manner that reflects her ancient lineage. She approaches governance pragmatically, managing humanity to sustain her vampire subjects while avoiding unnecessary destruction. Beneath her dignified exterior, she expresses strong affection toward select female companions. Conversely, she harbors a deep, unyielding resentment toward Veldora Tempest for destroying her ancient capital, often reacting with visible irritation whenever he is involved.

Abilities

Luminous Valentine is a master of holy magic who operates a specialized technique known as the Secret of Faith and Grace, using the devotion of her believers to amplify her processing capacity. She carries the Myth-grade sword Night Rose and possesses the Ultimate Skill Asmodeus, granting her complete mastery over life and death. Her capabilities include fully reviving the deceased if their soul remains intact, draining energy from targets through physical contact while inflicting intense pain, extending human lifespans, and delivering lethal slashes that eradicate vitality.

Background

Created by the vampire progenitor Twilight Valentine, Luminous Valentine eventually destroyed her creator due to his inhumane experiments. She initially established a flourishing vampire realm around her capital, Night Rose, but the region was completely ruined two thousand years ago by Veldora Tempest. In response, she moved her base to the subterranean city Night Garden beneath the Holy Empire Ruberios, establishing the Western Holy Church while relying on a double to pose as a Demon Lord. After her identity was exposed during the Walpurgis banquet, she resumed her public position as a Demon Lord and established a formal non-aggression pact with Rimuru Tempest.

Relationships

Luminous Valentine held deep hatred toward her creator, Twilight Valentine. In contrast, she demonstrates immense affection and attachment toward her close confidante Hinata Sakaguchi and the Hero Chloe Aubert. She views Veldora Tempest as a persistent nemesis due to past devastation, yet she holds high regard for Rimuru Tempest, forming a stable strategic alliance with him. She also relied heavily on her key subordinates, including her former proxy Roy Valentine and the Holy Empire's Pope, Louis Valentine.

Trivia

Luminous Valentine has a distinct preference for wearing a maid dress when traveling in secret or concealing her identity, treating the outfit as more than just a simple disguise. She designed the System of Faith and Grace, which grants holy magic to her followers while leveraging their faith to enhance her analytical power. Additionally, she uses a secret technique to extend the lifespans of her human servants, though her own immortality occasionally leads her to overlook the necessary intervals between rituals.