During the attack, Masamune revealed the cruel side of his nature by refusing the surrender of enemy soldiers and throughgoingly purged the entire enemy troops (Masamune's enemy mow down at the Odemori-jo Castle).
討伐の際は、降伏を認めないなどの徹底した粛清（小手森城政宗の撫で斬り）を行い、非道な一面を見せた。