In 1504, he attempted to dethrone his lord Masamoto to enthrone Masamoto's adopted son Sumimoto HOSOKAWA in conspiracy with Motokazu YAKUSHIJI, but they were overcome and arrested by Motokazu's younger brother Nagatada YAKUSHIJI and his team.
永正元年（1504年）、薬師寺元一と結託して主君・政元の廃立とその養子である細川澄元の擁立を企てたが、元一の弟・薬師寺長忠らによって鎮圧されて捕らえられた。