Lion King Organization (獅子王機関,Shishiō Kikan, or the Lion King Agency) is an organization that is seemingly dedicated to conserving the peace between humans and demons. It is led by three saints, two of which are Shirona Kuraki and Koyomi Shizuka. The identity of the first saint is currently unknown. They sent Yukina to observe Kojou, as he is disrupting the power balance between the three current Primogenitors, and eliminate him if he becomes a threat. In reality, the agency sent Yukina to become Kojou's lover, while Motoki Yaze is the true observer of the Fourth Primogenitor.