As the Amago army became aware of their movements, they decided to have Katsuhisa AMAGO stay at Suetsugu-jo Castle and stop Mori in Fubeyama, while they would go through and reach Gassantoda-jo Castle from Iwamiji Road.
これを知った尼子勢は毛利勢を食い止める為、末次城に尼子勝久を残して石見路から月山富田城に行く際に通る布部山で毛利を食い止める事とした。