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The ability to make any layer/surface much harder without losing any mobility. Opposite to Layer Removal.

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.





  • Hardened objects may allow light and other particles to pass through.
  • May be limited to certain objects or materials.
  • May require constant contact with the object or the effect disappears.
  • Layer Removal.

Known Users

  • Akatsuki Ousawa (Aesthetica of a Rogue Hero)
  • Hellas (Aldnoah.Zero)
  • Dioscuria (Aldnoah.Zero)
  • Poison Ivy (Batman: Arkham Knight)
  • Yuzun (Dragon Ball Super)
  • Irene Belserion (Fairy Tail); via Enchantment
  • Shirou Emiya (Fate/stay night)
  • Medea (Fate/stay Night)
  • Greed (Full Metal Alchemist); via Ultimate Shield
  • Lightning Flame users (Katekyō Hitman Reborn!)
    • Gamma
    • Lambo
  • Behemoth (Knights & Magic)
  • Parasite Unit/Skulls (Metal Gear Solid V: The Phantom Pain)
  • Isaiah Mustafa (Old Spice Commercial)
  • Busoshoku/Armament Haki Users (One Piece)
  • Tekkai/Iron Body Users (One Piece)
    • CP9 members
    • High Ranked Navy Officers
  • Yomiko Readman (Read or Die); limited to paper
  • Akio Fudo (Trinity Seven)
  • Deepa ("Boruto: Naruto Next Generations")

Known Objects

  • X-Ionizer (DC Comics)
  • Maw Installation (Star Wars)