Secret Shikotsumyaku Technique: Curse of Onryō

To start off, one must understand the fundamentals of chakra. It is composed of two aspects; Physical Energy and Spirit Energy. Physical energy is the flow of life that courses through every vein. Further increased through each pump of one's heart. The second field is Spirit Energy, or mental and emotional force. Empowered through mental training and exorcising. Combined, these two fields create the basis to all techniques. But, as seen with Chakra colors, each person has a different personal feel. And one with a stronger force can even bring it to life, causing even non-sensors to see it. It is this fundamental principle that creates Onryō's curse.

Muzai's chakra always surpassed average, easily equaling up to Kage if not more. His chakra is so intense that normal humans can see it as a skeleton shroud of pure white energy. His chakra is also filled with his spiritual power, a strong determination or indomitable will that defines him. A hatred for those who harmed his blood as well as a love and goal to protect bloodline limit users. All these powerful emotions and forces amplified his already massive chakra. So much so, he can literally force his ambition into an object that courses his chakra in a vein-like manner. Lord Kaguya covers bones, his or another's, with a course of his own cells which channel his chakra. Giving him control, Muzai can connect these bones to form a skeleton. By coursing his intense chakra within, this Skeleton is given life. But not life as in human. It becomes a physical representation of his will. Whatever Muzai wants or wishes, the skeleton does as well. In a way, it acts as a remote and television concept. His creation reacts to his source of power. This leads to his creations often calling themselves Zai or Mu.

This technique is not really for creating backup or some sort of army. Muzai uses it mostly for servant formation. He creates a skeletal structure, or takes an already present skeleton, and infuses his chakra within it. Bringing it to life. These creations can fight and use jutsu, although most involve spying, assassinations and messaging. His servants are formed in a similar manner to shadow clone, as when they are destroyed, his chakra returns as well as any knowledge gained. He can also use them as a way to speak to targets a long distance away. His creations can also animate skeletons by splitting their life force. However, doing so makes them weaker. This is usually done as a last resort to return back to Muzai.