Aoi Nanamori

When Aoi was seven years old he wandered into the Momochi House and was chosen as the Omamorisama. He transforms into Nue to perform his duties but it seems this role was meant for Himari. When he transforms into Nue he becomes an ayakashi the ears of a cat the wings of a bird and the tail of a fox. As the Omamorisama the nue protects Momochi House and eliminates demons who make their way in from the spiritual realm. Source: Viz Media