Kusanku Kata or Blindman's Kata
By Kuseru

By standardizing the character's attack and defense pattern, the character can attack and defend while blinded or fighting in absolute darkness or other low visibility conditions. The character fights with no bonuses or penalties to combat rolls but can only engage opponents within Combat Range or Grappling Range. The character has no ability to defend against attacks done from Long (Combat) Range or farther away and these attacks are treated as sneak attacks against the character. Obviously this kata should only be used when the character is blinded or otherwise can not see their opponents. When combined with Zanshin, this kata allows the character to defend against even invisible opponents with full bonuses, though it will still not allow Zanshin to work against characters using Chi Zoshiki.