At the same time, as the unpredictable inundation tactics stirred the castle, the declining provisions of rice for the army by losing their supply lines, and the fact of not having support troops from the Mori clan including Takakage KOBAYAKAWA and Motoharu KIKKAWA combined to wear down the morale of the troops.
一方、城内では水攻めという奇想天外な戦法に動揺し、物資の補給路を断たれて兵糧米が少なくなったことと、小早川隆景、吉川元春ら毛利氏の援軍が来ないことも相まって兵の士気は低下していた。