When the Black Knights were first formed, Zero made up a command structure and told all the members of the Black Knights their position. Kizuna was named the leader of the third squad. However, he doesn't make his first appearance until the Assault on Tokyo Settlement. During the battle, Lelouch was being chased by Jeremiah Gottwald who was piloting the Siegfried and gave Kizuna and his squad the command to shoot it down. Kizuna then gives his squad the order to fire at the enemy aircraft, but Jeremiah was able to effortlessly dodge the barrage of missiles fired towards him and used the Siegfried's spinning attack to annihilate all of the third squad, killing Kizuna along with them.