It is believed that the hand belonged to Ushioni that appeared in 1063 and that the Ushioni had a head of the cow and a body of the demon and used occult power to harass people living in the neighborhood.
康平年間（1063年）に現れた牛鬼のもので、牛の首に鬼の体を持ち、神通力を発揮して近隣住民を苦しめたという。