Beginning in the Medieval Period, Shinto and Buddhism advanced toward syncretization under the influence of Hieizan Enryaku-ji Temple, and the shrine came to be called one of the 'Three major Benzaiten in Japan' with Benzaiten as its honji-butsu (original Buddhist divine).
中世ごろから、比叡山の影響のもとに神仏習合が進み、弁財天を本地仏とし、「日本三大弁財天」の一つと称されるようになった。