in the battle of sekigahara in 1600 , he sided with the west squad and was the first to charge the enemy encampment as the spearhead in the battle in fushimi-jo castle , and he killed mototada torii who was shutting himself in the castle . 慶長5年(1600年)の関ヶ原の合戦では、西軍に与して伏見城攻防戦の先鋒となって一番乗りを果たし、伏見城に籠もる鳥居元忠を討ちとった(伏見城の戦い)。