He lived his days in faith and never took part in the family dispute in the Kamakura bakufu, which had been continuing from Tokiuji HOJO to Tokiyori HOJO; but when Yasumura MIURA, who was a son of Yoshimura MIURA the old friend of Tomomitsu, and all his clans were ruined at the Battle of Hoji in 1247, Tomomitsu came up all the way to Kamakura despite his old age from Shimofusa (his land), met Regent Tokiyori and spoke out his mind in tears as, 'If I had been in Kamakura as a council, I would never have let Yasumura meet the shame of a punitive death,' and for the sobbing old man Tokiyori was said to have showed deep sympathy.
信仰に生きる日々を送り、北条時氏から北条時頼へ続く鎌倉幕府の内紛に関与する事はなかったが、宝治元年（1247年）の宝治合戦で知己の仲であった三浦義村の子三浦泰村の一族が滅亡した際には、老齢の身を押して下総から鎌倉に上り、執権時頼に面会して「自分がいれば泰村を誅罰の恥に会わせなかったものを」と涙し、時頼は古老の涙を愛しんだという。