Held on the last Sunday in March, the Tsuchiyama Saio Princess Procession reenacts the Tsuchiyama segment of the Saio Gunko procession when a new Saio princess traveled from Kyoto to Ise to be the High Priestess of Ise Grand Shrines in Mie Prefecture.

The Saio princess was an unmarried, young Imperial princess, often the Emperor's daughter or sister, who was appointed (by divination) to be the High Priestess of Ise Grand Shrines from the 7th to 14th centuries. For about 660 years, over 60 Saio princesses served at Ise Grand Shrines.
The journey took 5 nights and 6 days, and passed through Otsu and Tsuchiyama in Shiga Prefecture. Tarumi Tongu in Tsuchiyama was one of the five palaces where the Saio lodged along the way.
Take the "Aikuru" bus from Kibukawa Station (JR Kusatsu Line and Ohmi Railways). After about 30 min., get off at Ono Higashi-guchi (大野東口) and walk to Ono Primary School.