[6] However, Shōgun Ashikaga Yoshimasa, not trusting Shigeuji, nominated his ally Uesugi Noritada as kanrei with the task of keeping him informed of whatever was happening in Kamakura.

The relationship between the two men, already difficult because of the role the Uesugi clan had had in Ashikaga Mochiuji's death, was therefore strained from the beginning.

This killing caused the Kantō region to fall into chaos as all of the Uesugi vassals rose in revolt against Shigeuji.

However, as many clans in the Kantō region remained loyal to Shigeuji and suspicious of the intentions of the Kyoto-based shogunate, Masatomo found that he was unable to even enter Kamakura.

[5] The precise site of the Horigoe Gosho was not certain for many years, but was by tradition held to be at this location due to its local place names of "Goshonouchi" and "Tsukiyama".