Since he and his father were to be searched and caputured on the order of Kanpu, the official document issued by the Imperial court according to Kadomasa's complaint, they seem to have had a fight with Masakado frequently, however, when the father died in June 939, he became neutral by keeping his distance from TAIRA no Sadamori, who was in conflict with Masakado.
承平7年（937年）に将門の訴状により朝廷から下された追捕の官符で父らと共に対象になっている為、この頃は父と共に将門と争っていたと見られるが、天慶2年（939年）6月に父が病死すると、将門と対立する平貞盛らとは距離を置いて中立的立場になったといわれている。