While the date of its founding is unknown, it is an ancient shrine listed in the Engishiki (Japanese Imperial Court's Book of Ancient Matters). Located on the former site of Kagamiyayama, it is highly revered as the guardian deity of the local land and the guardian deity of the Yodo River. It was originally built by sailors to pray for safe navigation and the prevention of flood damage. It is said that during the reign of Emperor Kaika, Takaokami no Okami was enshrined within the residence of Ikashikio-no-Mikoto and Ikashikime-no-Mikoto. okami Shrine archives house mathematical votive tablets (math tablets). These are dedicated with the blessing of the gods and Buddhas, and are said to bring progress as mathematicians. Mathematician Iwata Seiyo stayed in the area to recuperate from an illness, and in 1861, he dedicated a votive tablet to Gozu Tenno Shrine, the predecessor of Suga Shrine, as a token of gratitude for his recovery. The shrine grounds are also home to approximately 110 plum trees, making it famous as the "Ikami Plum Grove."