Oda Nobukatsu
Later in 1582, after the death of Nobunaga, in a meeting at Kiyosu Castle to determine Nobunaga's successor, Katsuie initially supported the choice of Samboshi, Nobunaga's grandson. but he later supported Oda Nobutaka, Nobunaga's third son, for whom Katsuie had performed the genpuku ritual. He then allied with Oda Nobutaka and Takigawa Kazumasu against Toyotomi Hideyoshi who was allied with Oda Nobukatsu. Tension quickly escalated between Hideyoshi and Katsuie, and the following year they clash at the Battle of Shizugatake.