After Oda Nobunaga achieved a great victory over Katsuyori Shibata and Lin Xiuzhen near Shinoki Castle, it was not long before his entire army continued to advance and began to approach Mosen Castle, at the same time dispatching envoys to urge surrender.
Two days later, with only miscellaneous soldiers and ashigaru left to defend Mosen Castle, the gates were opened, and Oda Shinsei and Katsuyori Shibata knelt at the gate, expressing submission.