Mitsuhide AKECHI attempted to solicit someone as a betrayer within Yagi-jo Castle, and the person who accepted his offer set a fire in the honmaru (main compound) and the ninomaru (secondary compound) of Yagi-jo Castle.
そこで、明智光秀は八木城の城兵に内通謀反を工作し、これに応じる者があり、城内の本丸、二の丸に火を放った。