Rokushiki/Shigan

Shigan is one of the six techniques of Rokushiki.

Overview
The Shigan  (指銃 Shigan?, literally meaning "Finger Gun")  is a close-quarter combat technique, in which the user pushes their finger into a certain target at a very high speed, leaving a wound similar to a bullet wound.

It is a very useful technique that can connect rapidly and accurately, which works well with the Rokushiki users' impressive speed and agile techniques. However it's never been used to counter or deflect another powerful attack in any fights, which is probably because the user could easily break his finger instead of just blocking it with Tekkai. The Shigan's shape is derived from the shape of the finger, making it sharper than round bullets and resembling more modern bullets.

Variations of Shigan

 * Shigan Volley: An apparent combination with Soru, the user dashes at the opponent at high speeds, hitting them with multiple Shigans. Seen here.
 * Shigan Hook: Shigan Hook reaches around the back of the target's head and tears the spinal cord and wind pipe through unexplained means. Seen here.

Trivia

 * In a fan question on SBS, Oda said that if you got poked in the butt with a Shigan, you'd die.undefinedIn another SBS, Oda also claimed that the CP9 agents would sprain their fingers when they failed in the technique during training.