Purple/Black Sister (Patreon)

Patreon reward this month of Neptunia's Purple Sister giving Black Sister a run-through with a cock!  Cock-through? This one was pretty nice and easy to go through, although I really hope that Neptunia models get a good upgrade in the next game, as the lack of 3d mouths and eyes make working with them a little bit of a pain in the ass and difficult to really do much with