Nil appears before the protagonist following the receipt of a letter containing complimentary sex tickets, each printed with a photograph of an individual's breasts. Nil informs the protagonist that they are qualified to participate in a game and confirms the tickets are legitimate. The assigned mission is to find a girl whose breasts match one of the images, thus beginning a search. Nil supplies a device called a Breast Scouter, which displays comprehensive details about any girl, including her name, three body measurements, birthday, and breast power. The scouter also includes an x-ray function enabling the user to see through clothing to view a woman's breasts.