Emperor Goyozei wanted to get rid of the crown prince (the first prince), Imperial Prince Katahito (monk-Prince Kakushin), who had been appointed according to Hideyoshi TOYOTOMI's disposition, and wanted to make his own decision as to who should be the next Emperor.
後陽成天皇はかねてから豊臣秀吉の意向で立てられた儲君・第1皇子良仁親王（覚深法親王）を廃して、自らの手で次期天皇を決める事を望んでいた。