To Hideyoshi, having Hidekatsu who was from his former lord, the Oda family, as his heir was a pretext, and Hideyoshi, as a member of the Oda family, altered the conflicts with other warlords to his advantage.
旧主織田氏出身の秀勝が継嗣に立てられていたことは、秀吉にとっては大義名分であり、秀吉は織田家の一族として諸将との抗争を有利に展開した。