The dragon shikigami that has been serving the Tsuchimikado family for generations. Hokuto is a true dragon, made of pure Yin-aura, that makes it attractive to spiritual disasters. Its current master is Natsume Tsuchimikado.
Hokuto has been used by Natsume several times under dire situations. It was also used as bait to lure in the Nue during Volume 3 for this reason. After Natsume's death and resurrection, Hokuto acts to sustain Natsume's life by possessing her, and as such the dragon is unable to fully manifest.