Also looking at the in-game album of scenes and artwork, there's an icon of a small shopping cart (after what seems to be the "normal" unlockable scenes through story progression and the hentai scenes themselves), what are these supposed to mean? As in they are DLC or are they unlocked by any other means? Sorry if it sounds confusing, but it just caught my interest and was wondering if there was such a way to "unlock" them per se.
P.S: Also added a cut-in of the icon in question so it's easier to understand.