Stories of the Japanese 01356 [Muromachi/Yoshinori Period] Prince Sadafusa and Yoshinori

Even after Prince Sadafusa became an Imperial Prince and Yoshinori became Shogun, their interactions continued.
May 7, Eikyo 2 / Shocho 3 (1430). Ichijo no Tsubone, who served the Retired Emperor Go-Komatsu, became pregnant, but the Retired Emperor Go-Komatsu claimed, "The one who got her pregnant is Sanemasa Madenokoji," and dismissed Ichijo no Tsubone. Sanemasa was a close associate of Yoshinori who had married his sister to Yoshinori, and Yoshinori was enraged and protected Sanemasa. This was the second time in five years that Sanemasa had been accused of an affair, but at least regarding the first accusation, it seems groundless as far as historical documents show. The truth of the second incident is unknown.
With this incident, the Retired Emperor Go-Komatsu completely turned Yoshinori into an enemy, but unlike the Retired Emperor or Yoshinori, Prince Sadafusa was the type who would absolutely endure things even if they were unpleasant. In August, an incident occurred where Tamuke Tsuneyoshi, a close associate of Prince Sadafusa, was suddenly dismissed from his position as Shokei (an official who mediates between the Imperial Court and the Iwashimizu Hachimangu Shrine) of the Iwashimizu Hachimangu Shrine, and his scheduled promotion to Gon-Chunagon was cancelled, because Yoshinori held a grudge that he had not participated in his ceremony of paying respects as Udaijin the previous month. Prince Sadafusa did not protest this at all and swallowed his pride. This was likely because he had already recognized the terrifying nature of the man named Yoshinori.
Yoshinori immediately began harassing the Retired Emperor Go-Komatsu. In November, there was an Imperial visit for the Gosechi ritual for Emperor Go-Hanazono, and Yoshinori invited Prince Sadafusa, not the Retired Emperor, to watch it with him. Since Emperor Go-Hanazono had ascended the throne as the adopted son of the Retired Emperor Go-Komatsu, the father-son bond with Prince Sadafusa had already been severed, so it must have been highly unpleasant for the Retired Emperor that only Prince Sadafusa was invited.
It must have been stressful for Prince Sadafusa to face Yoshinori, but he had not been able to see his son even once since his ascension. Wishing to catch a glimpse of his son in his moment of glory, Prince Sadafusa accepted the invitation and watched from inside an ox-drawn carriage. Prince Sadafusa happily recorded in his diary that he was able to see his son's face faintly through the bamboo blinds. On the other hand, the Retired Emperor, upon learning of this, was naturally displeased.
Yoshinori's tyranny continued. On November 9, Masanaga Higashibojo (1407–1475) was forced into seclusion after his lands were confiscated because he had smiled at Yoshinori during the Naoshi-hajime ceremony. He was a person who could be angered by anything.
Prince Sadafusa ended up having to hold a banquet with such a terrifying person on December 20. When Prince Sadafusa went down to the garden together to see Yoshinori off, Yoshinori glared at him. Prince Sadafusa hurriedly returned to the main hall, but the next day, he received a message from Yoshinori:
"You descended to the garden yesterday, which was not appropriate. Do not do so in the future."
Yoshinori was trying to treat Prince Sadafusa as the "biological father of the Emperor" in order to exclude the Retired Emperor Go-Komatsu, and he likely wanted to say that he should act with an awareness of his high status. Prince Sadafusa recorded his reflection in his diary:
"I seem to have made a mistake."