Onmyodo

Onmyodo is a natural science which encompasses fortune-telling, spellcraft, and astronomy. Onmyodo as a practice is overseen and officiated by the Onmyoryo.

History
The first documented use of the earliest form of Onmyodo was around the year 125, by seafarers who were adept at using heavenly bodies to navigate the seas and deciphering cosmological prophecies. These early Onmyoji were capable of evading danger which lurked in the waters and mastered what Ashihara would later come to know as divination and exorcism.

Onmyodo has since evolved into a legitimate natural science and a practical means to work with nature. Energy is drawn from naturally occurring elements, heavenly bodies, or immaterial sources which are channeled into a spell through written conduits, such as paper talismans and engravings in objects. Through their mastery of worldly elements, a prepared Onmyoji is capable of expelling and controlling Kegare faster than a Miko or a Negi can.

Onmyoji
Onmyoji are practitioners of Onmyodo.

Shikigami
Shikigami are conjured beings, made alive by giving up life force. This life force is given form through a conduit, usually weapons, or straw and paper dolls. Because of this, shikigami are considered to be an Onmyoji's symbol of power.

Youmagatana
Youmagatana are ancient weaponry that have accumulated copious amounts of energy and have become a yokai naturally over time, or a weapon that serves as a vessel to seal a yokai. Onmyoji that wield Youmagatana cannot be weak of will, as they risk being overpowered by their weapon.