He's been trying to milk his old content for a while; these are a decade (or more) old. His twitter is promoting shoots with other models, but Rui is the only one he's got hardcore of. Shit's insanely overpriced, even if it's the sort of thing you wanna see.
edit: I forgot he has Ran Niiyama as well, except she's done plenty of JAV, so it's not as big of a deal.