This is a battle of the allied forces of Kanto Kanrei (Sadamasa OGIGAYATSU and Akisada YAMANOUCHI), Koga kubo (Nariuji ASHIKAGA), Yoshiatsu MIURA and Yoritane CHIBA versus the Satomi family which broke out in the winter of 1483 (in the novel).
作中の文明15年（1483年）冬、関東管領（扇谷定正・山内顕定）・滸我公方（足利成氏）・三浦義同・千葉自胤の連合軍と里見家による戦争。