After he was attacked by Katsuie SHIBATA, a busho (commanding officer) of Nobunaga, on April 8, 1573, he surrendered and left the castle because he was persuaded by Kagetaka, his older brother who took the side of Nobunaga.
元亀4年（1573年）2月26日に信長の部将である柴田勝家に攻められたが、信長方に付いた兄・景隆の説得を受けて降伏・開城した。