Stories of the Japanese 01383 [Muromachi/Yoshinori Period] Yoshinori's Final Year

In fact, by the time Haruomaru and Yasuomaru were beheaded, we were only one month away from the "Kakitsu Incident" in which Yoshinori met his violent end. To understand why Yoshinori was killed, let's rewind the story to the previous year.
May 15, Eikyo 12 (1440). Yoshinori ordered Takeda Nobuhide (1413–1440) to kill Isshiki Yoshitsura. The reasons for this were:
• Yoshitsura, relying on the fact that he had been highly valued by the 4th Shogun Yoshimochi, requested to be at the head of the procession for Yoshinori's ceremony of paying respects as Minister of the Right. When this was not accepted and he was placed second, he was dissatisfied and feigned illness to be absent on the day.
• Yoshinori had given the character "nori" from his own name to Yoshitsura's biological son, Norichika (1419–1451), and appointed him as a close aide. However, out of hatred for Yoshinori, Yoshitsura also resented Norichika and was reluctant to allow him to succeed as head of the family.
These were the two points.
The following day, May 16, Yoshinori ordered his close aide, Nagano Mitsufuji, to kill the Ise Shugo, Isshiki Mochiyori. It is said this was "because Mochiyori had been showing a rebellious attitude on a daily basis," but it is unclear exactly how he was being rebellious.
Two Shugo were destroyed in quick succession, and their territories were divided as follows:
• The Wakasa Shugo position went from Isshiki Yoshitsura to Takeda Nobuhide.
• The Mikawa Shugo position went from Isshiki Yoshitsura to Hosokawa Mochitsune (1409–1450).
• The Tango Shugo position went from Isshiki Yoshitsura to Isshiki Norichika.
• The Ise Shugo position went from Isshiki Mochiyori to Isshiki Norichika.
However, when Takeda Nobuhide beheaded Isshiki Yoshitsura, he was counterattacked by Yoshitsura's retainer, Mikata Tadaharu (?–1440), and suffered a fatal wound, dying just two months after taking office as Wakasa Shugo.
Furthermore, on January 29, Eikyo 13 (1441), a succession dispute arose in the Hatakeyama family. Hatakeyama retainers Yusa Kunimasa and Saito Sukesada attempted to depose the current head, Hatakeyama Mochikuni, and install his younger brother, Mochinaga (?–1441), as the head.
Yoshinori, who wanted to strip powerful Shugo of their authority, approved this coup, and Mochikuni was forced to withdraw to Kawachi Province.
Furthermore, on June 18, Togashi Norie suddenly incurred Yoshinori's wrath and was dismissed as Kaga Shugo. Yoshinori had Norie's younger brother, who was then a katsujiki (a type of servant) at Daigo-ji Temple, return to secular life, named him Yasutaka (1418–?), and had him succeed as head of the Togashi clan and as Kaga Shugo.
Yoshinori had intervened in many family successions before, but the developments of this past year were abnormal. Because he acted so selfishly, Yoshinori would eventually pay the price.