However, when Hideyoshi reported to Tadaoki HOSOKAWA that Yoshisada was planning a rebellion, Fujitaka and Tadaoki, who were suspicious about Yoshitada, invited him to Miyazu-jo Castle and killed him by a deceptive attack.
しかし、やがて、秀吉から細川忠興に、義定が謀反を企んでいることの報せが届くと、義定を疑った藤孝と忠興により宮津城に招かれてだまし討ちにより殺害された。