In 1272 soon after the assumption of the post, he was ordered by the regent Tokimune HOJO to search and kill Tokisuke HOJO, Tokimune's older paternal half-brother, and killed him at Nigatsu-sodo (February Rebellion).
着任早々の文永9年（1272年）に執権・北条時宗の命により時宗の異母兄・北条時輔追討を命じられ、二月騒動で討ち取る。