 Two days after arriving, the Amago launched an attack on Koriyama Castle, which continued for several months.The Ōuchi relief army, consisting of 10,000 men led by Sue Harukata, finally departed Suō Province in the 11th month, pausing on Miyajima to offer prayers for victory at the Itskushima Shrine before landing in Aki and marching towards Koriyama Castle.They arrived outside Koriyama in December 1540, four months after the siege had begun.