The "Cord-Cut" name refers to the countless "cords" that makes human body. The cords includes blood vessels, lymph ducts, tendons and nerves. To use that technique, the fighter have to train his fingers to the limit. Then he need to study a lots about the human body. When the training is completed, the fighter can sever the opponent's cords with a finger. The technique had one weakness: before the fighter can cut a cord, he have to pull that cord out, and it takes a lots of time. But Kosho Shinogi mastered this technique to the maximum, and even made an improvement.
Kosho Shinogi is the best and the most famous user of this technique. He can easly sever tendons, nerves, and others.