Private Idol Disc Vol.4: Kuroda Mirei

Private Idol Disc Vol.4: Kuroda Mirei is a multimedia photobook of gravure idol Mirei Kuroda. It includes a gallery of photos and interview questions, as well as a simple quiz minigame with questions about the idol. Clearing all rounds of the quiz will give the player a password and instructions to enter a prize drawing with publisher SadaSoft.