Uh dude, NSFW?
Back on track, it isn't just those 4. They've uncensored most of the early-gen N girls (Mayumi Hashiguchi, Kayo Shimada, Yukiko Hosaka, Chiho Kojima) and a few of the R (Yumeho Suzumi) and SR ones (Mayuko Abe).
Gonna take a while to get through all 363 girls (almost one for every day of the year) but it's progress, I suppose.