In 1247 when a conflict between the fifth regent Tokiyori HOJO and the Miura clan who was the influential gokenin intensified, Kagemori who became impatient left Koya-san Mountain and wend down to Kamakura being heedless of his old age.
宝治元年（1247年）、5代執権北条時頼と有力御家人三浦氏の対立が激化すると、業を煮やした景盛は老齢の身をおして高野山を出て鎌倉に下った。