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Layer Reinforcement

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The ability to make any layer/surface much harder without losing any mobility. Opposite to Fortitude Weakening.

Also Called

  • Hardening


User can make any layer/surface much harder without losing any mobility through whatever means, either as a whole or only partially.


  • Corporealization: Make immaterial aspects that are normally substanceless more than solid.
  • Deflection: refining defensive properties to rebound or reflect for various purposes. 
  • Dermal Armor
  • Internal Reinforcement
  • Skin Hardening
  • Solidification
  • Continually harden an object without increasing its mass.
  • You can reinforce your blunt force weapons.
  • You can harden air to walk on or create a barrier.
  • Increase the damage of a strike without losing any momentum.
  • Alter the Sharpness of certain objects (i.e. cardboard or paper) by hardening/compacting molecular lattices.



  • Hardened objects allow light and other particles to pass through (can be good or bad).
  • May be limited to certain objects or materials.

Known Users

  • Akatsuki Ousawa (Aesthetica of a Rogue Hero)
  • Poison Ivy (Batman: Arkham Knight/DC Comics)
  • Shirou Emiya (Fate/Stay Night)
  • Medea (Fate/stay Night)
  • Isaiah Mustafa (Old Spice Commercial)
  • Lightning Flame users (Katekyo Hitman Reborn!)
  • Gamma (Katekyo Hitman Reborn!)
  • Lambo (Katekyo Hitman Reborn!)
  • Busoshoku Haki users (One Piece)
  • Greed (Full Metal Alchemist)
  • Yomiko Readman (Read or Die); limited to paper
  • Akio Fudo (Trinity Seven)
  • Parasite Unit/Skulls (Metal Gear Solid V: The Phantom Pain)

Known Objects

  • Maw Installation (Star Wars)


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