Concept Improvement (概念改良, Gainen Kairyō?) is the special right and unfair advantage of improving any tool, from any given time or place. A bow becomes stronger, a sword becomes sharper, an axe becomes heavier, etc.[1][2]

Rank User(s)
A+ Thomas Edison
By combining this Skill with Mass Production, he is even capable of mass producing weapons that demonstrate the same destructive power of a low grade Noble Phantasm. The amount by which something can be improved depends on the rank of the Skill. At A+, he is able to bestow conceptual improvements on almost anything outside of Divine Constructs.[1][2]
  1. 1.0 1.1 Fate/Grand Order material III — Profile of Thomas Edison.
  2. 2.0 2.1 Fate/Grand Order material III: section on Dr. Jekyll and Mr. Hyde, Thomas Edison, Charles Babbage and Paracelsus von Hohenheim Personal Skills, translated by TwilightsCall at Beast's Lair.
Servant Skills
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