It is said that the enemy of my enemy is my friend, but couldn't he just be another enemy? Rin and her bodyguard, the immortal swordsman Manji, need to know the answer when they visit the headquarters of the mysterious Akagi assassins -- led by the beautiful and deadly Hyakurin -- who are out for vengeance against the Itto-Ryu, the rogue sword-school of Anotsu Kagehisa, the man responsible for the murder of Rin's parents. Can Rin and Manji hold to their own course once they've agreed to join forces with the misfit band of killers?