Oomunachino-mikoto God is enshrined in the Onsen Shrine. It derives from a story that Priest Shoto found Yumoto Hot Spa. Yakushi Rurikou Nyorai that Priest Shoto enshrined, and Onsen Daimyojin that Saint Jikaku worshipped in 848, were co-existed in the Onsen Shrine until Meiji period.

The Onsen Shrine was moved to today's place in 1962, and vermilion lacquered new shrine was built additionally. Former Douhokora (Copper Shrine) is designated as important cultural property, and is stored in the Treasure House of Futarasan Chugushi Shrine today.