Based on the Noto region’s distinctive image of the saru-oni. It has an ape-like body crowned with a single horn and dwells in rock caves, menacing livestock and people near settlements. It appears under cover of night and is feared as a boundary breaker between the mountains and the village. Communities sought the protection of local tutelary deities, and tales of subjugation by bow and arrow are tied to place-name origins. After its defeat, its horn is said to have been enshrined, and memorial shrines were established, pairing awe with appeasement. The saru-oni is told as a singular creature rather than a pack. Its range centers on cave mouths and the satoyama borderlands, its presence marked by a bestial stench and legends of black blood.