In March 1573, Seii Taishogun (literally, "great general who subdues the barbarians") Yoshiaki ASHIKAGA made up his mind to oppose Nobunaga ODA and rose up in arms in Nijo-jo Castle.
天正元年（1573年）2月に、征夷大将軍足利義昭は反織田信長を決意し、二条城で兵をあげた。