According to the "Shinsengumi Shimatsuki" by Kan SHIMOZAWA, Todo understood Nagakura's intention, but he couldn't throw away his pride or abandon his comrades, so he fought against the Shinsengumi and was cut down by Tsunesaburo MIURA.
子母澤寛の『新選組始末記』によると、永倉の深意はくみ取ったものの、魁先生と呼ばれたプライドと同士を見捨てられないので、新選組に立ち向かって三浦常三郎に斬られたとある。