The Koebi family was a vassal family of the Hida family, and served the Hida with loyalty and honor for centuries. Kaiu Kenru recommended to Hida Kisada that they be given Minor Clan status. In 1123 the lands of the Koebi were destroyed by a monsoon. The only remnants of the once-proud family were the ancestral Koebi Jitte and the daimyo's eldest son, Ryhodotsu, who was away at the time.