Games like Private Idol Disc: Tokubetsu-hen Campaign Girl '97

If you finished Private Idol Disc: Tokubetsu-hen Campaign Girl '97, the closest matches are Private Idol Disc Vol. 6: Yoshida Satomi, Private Idol Disc Vol. 7: Asou Kaori, Private Idol Disc Vol. 8: Furukawa Emiko, Private Idol Disc Vol. 9: Nagamatsu Keiko and Private Idol Disc: Data-hen Race Queen F. All 6 share its quiz/trivia genre and are ranked by how closely their themes and modes overlap.