 The ensuing Battle of Ashiyagawara occurred near Takao Castle.Takakuni ordered his retainer, Kawarabayashi Masayori, to construct the castle to serve as a forward operating base intended to thwart the advance of Sumimoto from Awa Province into the Kinai Region and, in particular, the capital of Kyōto.Sumimoto called upon forces from Shikoku under the command of Hosokawa Masakata and Hosokawa Mototsune to augment the army under Hosokawa Hisaharu, "shugo" of Awaji Province.