Cosmo and Nation

Cosmo and Nation are just a brother and sister with unnatural lives. He's a strange, lonely young man and she's an ill-tempered, strong-willed young woman. They are the only people in the world who truly understand one another. Is it really all that wrong for this to happen? Will the forces of what's considered "right" and "wrong" drive them apart? Or closer together?

||Note: This is a Rocky Horror Picture Show Fanfiction that will contain three books, also including Shock Treatment