First obtain 100 percent in the game and that includes beating the bonus dungions obtaing max levels for maria and nel and getting there best equipment and weapons in the game after that is done go in to the main menu of the game itself and enter select(10), start(10), and hold square,triangle,circle, and x for 2 minutes and then you will hear a moaning sound that is how you will know you know input the cheat correctly once all that is done start new on any difficulty and the first scene you will see will be nel and maria having sex in maria's bedroom this scene is about 20 minutes long and then conclude and the regular beginning scene will follow so have a very very good time watching these two go at enjoy.