Aliens are on Earth, and they did exactly what we all thought...They saved it. They ended wars and hunger, all the problems Humans believed were impossible to fix. Now, Chiharu Souta is the last Human on Earth, and his parents were against the Aliens and Demi-Humans-their actions in teaching him to hate them as well creted a Sociopath who detested all and kept to himself. They told him it was disgusting to fall in love with someone that wasn't human, and that he needed to keep the bloodline pure. But how could he keep it pure when, after their deaths, he was the only Human left on Earth? The answer was simple. "I will never fall in love." That wasn't a problem for someone like him. Love wasn't a word in his dictionary. That is until he met her.