Steel Release: Impervious Armour

This technique allows the user to turn their body into jet-black steel. Hiruko states that blades do not affect him at all due to this ability, which is demonstrated when Sai 's tantō snapped clean in half on impact.

## Trivia [ ]

- The portion converted into jet-black steel is similar in appearance and functionality to Kakuzu 's Earth Spear technique , though Hiruko did not show the offensive usage.

## See Also [ ]

- Crystal Armour
- Earth Release: Earth Spear
- Earth Release: Hardening Technique
- Rock Armour