He attacked Masasuke and his son, Takatsune SHONI, in February 1497, leading to their suicides in April, and expanded his power in northern Kyushu.
明応6年（1497年）1月には少弐政資・少弐高経親子を攻め、4月に両名を自害に追い込んで北九州に勢力を拡大した。