You are a young photographer girl. One day you go to a bookstore and you are drawn to an ancient Black Book. But it's not an ordinary book... You are faced with three attractive demons, they are the embodiment of the Seven Deadly Sins: Lucius (Pride), Mitsuki (Wrath) and Gray (Lust), they are looking to make a contract with you that will unite forever. Each demon has something wonderful to offer.

"Look who found the book" Says Lucio looking at you, the other two look you up and down.