An alien prince falls from the sky and wants to marry Hako-a girl with the worst luck ever?! Strange accidents always seem to happen around Hako Natsuno-so much so that she's been dubbed the "Queen of Bad Luck." It's hardly surprising then that a naked alien prince falls from the sky to tell her that out of all the girls in the universe, he's come to Earth to mate with her. Does this mean Hako's luck has changed, or...? Hako Natsuno's bad luck hasn't improved, but her alien boyfriend, Io, takes everything in stride, even when his feelings for her cause him to be repeatedly struck by lightning. The two have barely started dating when a naked alien girl arrives on Earth and says she is Io's true mate. Hako really does have the worst luck!