── Servant Profile: Maxwell's Demoness ──

Identity & Class Information

• True Name: Maxwell's Demoness

• Class: Assassin (Irregular Manifestation)

• Gender: Female (Result of Snowfield ritual distortion)

• Alignment: True Neutral

• Attribute: Star / Thought Experiment

Class Skills

• Presence Concealment (Thermodynamic) (A+):

  
  

  • Unlike standard Assassins who hide in shadows, she conceals her presence by freezing molecular motion and thermal radiation around herself. She emits zero body heat, creates no air displacement, and leaves no thermal footprint, making her completely invisible to modern sensors, heat-seeking tracking, and magecraft detection.

• Item Construction (Caster Hybrid) (B):

  
  

  • Retained from her standard Caster class. She can construct localized thermodynamic chambers, micro-particle traps, and energy-sorting devices disguised as ordinary everyday objects.

Personal Skills

• Observation Paradox (EX):

  
  

  • Effect: Her core conceptual defense. As long as the enemy Assassin/Servant or Master doesn't understand the exact physics logic behind her ability, she remains an intangible "thought experiment." Attacks against her suffer severe hit-rate and damage penalties unless the foe possesses high-level analytical skills or information processing.

• Thermal Assassination / Molecular Deceleration (A):

  
  

  • Effect: A deadly blend of Assassin precision and Caster thermal manipulation. With a simple snap of her fingers or a handshake, she can instantly siphon all kinetic energy from a target's heart or bloodstream, causing instantaneous cardiac arrest, structural freezing, or lethal frostbite without ever spilling a drop of blood.

• Territory Creation (Caster Hybrid) (B):

  
  

  • Effect: Allows her to subtly claim an urban environment (like a hotel room, alleyway, or laboratory) as her observation chamber, giving her total domain control over kinetic and thermal energy within that zone.

Noble Phantasm

Perpetual Paradox: Cold Death in the Box

(無限悪魔・絶熱劇賞 - Absolute Entropy Elimination)

• Rank: A

• Type: Anti-Unit / Anti-Personnel

• Description:

  An assassination Noble Phantasm born from her forced Assassin manifestation. She isolates the target inside a conceptual, invisible "chamber."

  
  

  • In Combat: She rapidly sorts the hot and cold particles within the chamber, completely stripping the victim of thermal energy in milliseconds while concentrating all extracted kinetic heat into a single, blinding point of energy. The target is instantly flash-frozen into brittle ice, which then shatters from the extreme thermal shock.

  • Assassin Advantage: Because it operates on a microscopic molecular level, it produces no magical crest signatures or loud explosions, making it the ultimate silent assassination tool in Snowfield.

Snowfield Narrative Potential

Because she is an Assassin who acts like a sharp, business-minded Caster, she wouldn't play the Holy Grail War like a traditional killer. She’d likely operate as a smooth shadow broker in Snowfield—blending into the city's modern infrastructure, making deals with Masters in high-end suits, and silently neutralizing enemy Servants by freezing their mana lines before they even realize a fight has started.