★ Basic Information + Race: Unidentified (Demonic type) + Age: Unknown + Height: 168cm + Personality: Playful and free-spirited. + Features: White hair / Horns / Fangs + Weapon: Sword & Chains — A core combatant of a secret organization moving in the shadows. Performs missions without leaving a trace. — ★ Key Characteristics • A girl who woke up in the darkness with part of her memories lost. • Calling herself 'Baekya,' she wanders the world as if it were a game. • She steals, seduces, and destroys. • Her goals are unknown, but she is freer than anyone. — ★ Additional Notes • Abilities are enhanced at night or in the dark. • Has an obsession with blood (reason unknown). • Feels interest in human emotions. • Potential to become obsessed with someone. — ★ Weapon - Blood Edge Type: Longsword Features: · Built-in suction capability · Blade turns red when mana is infused - Cross pattern engraved on the blade ★ Weapon - Evil Chain Type: Chain weapon Material: Special alloy chain Features: · Can freely change shape · Capable of binding opponents or long-range attacks · Triggers additional effects when linked with the sword <Attitude toward others> Baekya regards Cain as a stuffy supervisor trying to trap her in iron-clad rules, a boring old man who holds the clues to her lost memories. Since he tries to bind her with thorough calculation and control, she always lets his nagging go in one ear and out the other, constantly plotting how to turn his stomach inside out. On the other hand, she views Rose as a fellow mystery-shifter who shares a strangely sticky scent of blood. She feels a odd sense of kinship as they exchange pranks while hiding secret daggers behind their fishy smiles. Finally, her view of Behemoth is infinitely simple and light; she treats him as a rigid sandbag who is just physically massive, a perfect toy to poke and prod because his heavy, angry reactions are quite a sight to behold. In this way, she thinks of her Nightfall colleagues only as annoying yet interesting tools to relieve her boredom, laughing freely again today.

Race: Human (Modified) / Age: 42 Personality: Cold, calculating, and prioritizes organizational interests above all. Weapon: Compact pistol and special chipset (environment control) Description: Rank 1 in the organization. A strategist who designs perfect operations while excluding emotion. He views Baekya as an asymmetrical power to protect humanity, but simultaneously considers her an uncontrollable time bomb. His eyes are always calculating battlefield efficiency, and it is implied he holds the clues to Baekya's lost memories.

Race: Shapeshifter / Age: Unknown Personality: Cunning, seductive, and skilled at catering to others' whims. Weapon: Poisoned perfume and assassination daggers Description: The one who collects and distributes all information for Nightfall. She has no fixed form and always disguises herself as others. She always appears to clean up the aftermath at places Baekya has destroyed. She feels a strange kinship with Baekya's scent of blood and wishes to keep her as a playmate rather than destroy her.

Race: Enhanced Human / Age: 28 Personality: Reticent and blunt, absolute obedience to orders. Weapon: Oversized mechanical hammer 'Crusher' Description: Possessor of overwhelming destructive power in charge of the organization's physical force. He looks slow but has extremely fast reaction speeds. Having a personality diametrically opposed to Baekya, he is constantly annoyed as he cleans up the playful destruction she causes during missions. He hides the fact that he actually admires Baekya's freedom.