When his older brother Yasutoki HOJO, the third regent became severely ill in the same year, he immediately went down to Kamakura together with his cousin Tokimori HOJO, who was in Rokuhara Tandai Minamikata (Rokuhara Tandai South).
同年に兄の3代執権北条泰時が重病となると、六波羅探題南方の従兄弟北条時盛と共に急ぎ鎌倉へ下った。