Sato Hikogoro is a wealthy farmer in Tama and headman of Hino Village, not far from Ishida Village. His mother was the sister of Hijikata's father and she was the one who arranged Hikogoro's marriage to Nobu. He now has a young son named Toshinori. Sato is a kind-hearted person, but can be stern when he needs to be. Toshi has lived mostly in his home since he was 11 and the two get along very well together.
When Toshi was 14, Sato became concerned about bandits and theives in the area and built a dojo in his home. He invited Kondo Shusuke to teach swordsmanship there, so Shieikan members would often be visiting his house. Like Kojima, he becomes Kondo's sworn brother.