In Nymphomania Paradox, Ruriko Saionji is a moble girl who attends the Sei Man Kou Academy, a prestigious women’s school. She has a clean and neat appearance, along with the manners of someone who is noble. But, what no one knows is, she has a hidden side to her. That hidden side will lead this intelligent young lady to become a loose slut. It seems like an instant transformation, but it’s something that has been boiling deep inside her, and it’s only now that it’s risen to the surface.