DearS

One year ago, a spacecraft crashed into Tokyo Bay. With no means to return, aliens obtain Japanese citizenship and begin a home-stay program and were given the name "DearS," meaning "beloved friend." Takeya doesn't trust the aliens one bit until he encounters a mysterious girl who is cold, hungry, and wrapped only in a blanket, he takes pity on her. As he brings her home to care for her, he finds that she is quite possibly one of the DearS. Add an alien cat-girl, an over-sexed teacher, and this DearS considers Takeya her master, life is beginning to become a little more than he can handle.