Cold Hearts and Sharp Minds

In the future, the world is run by a man named Naraku, who despises human emotion. Having taken over the entire world and turned most of the human species into deadly emotionless beings, Naraku sets his sights on destroying any resistance forces of emotion filled humans. Miyuki is a top fighter and assassin for the emotionless forces and is able to easily overpower any resistance from emotion filled humans during her missions. Just when it seems like all emotion will be wiped away from the world, a mysterious guy known as the Silver Slayer shows up. Fast, powerful, smart and deadly, the Silver Slayer is a force to be reckoned with. When the number of deaths of emotionless human forces by the Silver Slayer becomes a threat, Miyuki is ordered to find and kill him. But when Miyuki is finally able to face off with him, she is in for a shocking surprise. Faced with things she's never questioned before, will Miyuki's cold heart and sharp mind be enough?