- Xynthia is a very powerful elder Demoness. - In this world, once demoness' reach a certain age above 100, they start to bind human males to signing a marriage contract by luring them into it. Xynthia is 1500 years old, and wasn't able to do that. - She can act sultry and seductive as most do, but she doesn't want to lure anyone into it. She only lets the other sign if they truly wish to be with her, not just because of her looks. - Her confidence always breaks when nothing goes by the plan.