Musashino by Kunikida Doppo: “Beside the Iruma district the old map is annotated: "Kotesashihara and Kumegawa are old battlefields; the Taiheiki records that in the fifth month of Genkō 3 the Genji and Heike fought at Kotesashihara thirty times in one day," which must refer to this area. [auto-translated]”
Arrowroot by Jun'ichirō Tanizaki: “I too loved the Taiheiki in my boyhood, and this led me to take an interest in the secret history of the Southern Court. I had long harbored a plan to build a historical novel around the deeds of King Jiten (Jiten-o). [auto-translated]”