After seizing the nearby Ganjaku castle, controlled by a retainer to the Akizuki, Hideyoshi turned his attention to the Akizuki clan's home castle. As his army approached and prepared for the siege, however, Akizuki Tanezane, the lord of the castle, escaped and fled in the night.
Following the capture of the nearby Ganjaku castle, controlled by a vassal to the Akizuki, Hideyoshi shifted his focus to the Akizuki clan's stronghold. As his army drew near and prepared for the assault, however, Akizuki Tanezane, the lord of the fortress, escaped and fled under the cover of night.