Then, the reason why Hideyoshi requested like this was regarded as following; Nobunaga at that time needed to come up to Kyoto because he had negotiated very often with Imperial Court over human affairs of high officials and a problem of Imperial succession.
では、なぜこのような要請を行なったのかと言えば、当時の信長は三職補任問題や皇位継承問題などで朝廷と頻繁に交渉していたため、京都に上洛する必要があった。