As Hideyoshi obtained information on Nobunaga's death very quickly and he had not lost his military power by enveloping attack of the Takamatsu-jo Castle in Bicchu Province, it is said that he must have known about the Honnoji Incident in advance.
信長の死の報をいち早く入手し、備中高松城への攻城戦包囲により殆ど戦力を失っていなかった事から事前に変を知っていたとする。