This is a noteworthy technique created by the Monodukuri, one that would allow them to become more in tune with their armament. What one does is take the yin-yang orientation of their chakra that connects to their soul, and places upon the weapon of their choice. This changes the blade's foundation so that it will only respond to them; anyone else who dares wield the weapon without the user's permission is rejected. One could compare the process to imprinting, having a similar permanence. The advantages include the weapon being quick to respond to your will and command, as well as increased speed and overall power. However, an important disadvantage is that should the blade be broken or destroyed completely, the user that it is connected to could be severely crippled, if not killed.