Just as Sadanobu MATSUDAIRA admonishes in "Shizukanaru Amari," which he authored, by citing Ujizane IMAGAWA's waka poems along with the tea ceremony of Yoshimasa ASHIKAGA and the learning of Yoshitaka OUCHI, in the documents written after the mid-Edo Period Ujizane is often described as an inept lord who destroyed his province by spending too much time in 'weak culture' such as waka poetry and kemari, and this image often persists in portraying his character in today's historical novels and period dramas.
松平定信が随筆『閑なるあまり』で、足利義政の茶の湯、大内義隆の学問とともに今川氏真の和歌を挙げて戒めている様に、江戸時代中期以降に書かれた文献の中では、和歌や蹴鞠といった「文弱」な娯楽に溺れ国を滅ぼした暗君として描かれていることが多く、このイメージは今日の歴史小説や歴史ドラマにおいてしばしば踏襲されている人物像である。