It appears that the Nezumi no Hokura had already become famous by the Kamakura period, and in the Isetsu Hishō Kuden no Maki published in 1319 (in the Gen'ō era), there is the lyrics At the base of Wagatatsusoma (meaning Mount Hiei) is a rat god, and by sounding its name once again, maybe it'll bring forth some good fortune (さればや我立杣の麓にも鼠神といははれ給ひて、其名をあらたにとどめき、様々の奇瑞をなせりとか) and in the renga collection Tsukubashū compiled in the Nanboku-chō period, there are renga based on the Raigō legend such as this is the rat around the mountain base (塵にまじはる鼠とこそあれ) and at our mountain, it is one of the gods worshipped (我山にこれもあがむる神のうち), among others. Originally, this hokura (shrine) was told to be bring benefit by warding off rats, but starting in the Shōwa and Heisei periods when anti-rat measures have started to become sufficient, it has gradually lost its role of warding off rats.