The other adopted son Takakuni, however, conspired with his two relatives, Masakata HOSOKAWA, the bungunshugo (a provincial constable of a specially given province in gun unit) of Settsu Province, Hisaharu HOSOKAWA, the shugo of Awaji Province and Yoshitaka HATAKEYAMA, the shugo of Kawachi Province; amongst the four of them, they agreed to make Sumimoto the successor of the Hosokawa clan (the Keicho family).
しかしもう一人の養子・高国は、一族の摂津国分郡守護細川政賢や淡路国守護細川尚春、河内国守護畠山義堯と語らい、細川氏（京兆家）の後継者を澄元とすることで合意をみた。