not a bad idea. get rid of the single page jump to's and replace them with a simple next/prev.
regarding myself, the need to use mouse and keyboard (to skip forward past repetitive text) is a bit irritating, as is that the ability to rub the girls bellies are severely limited (seemingly only katrine being rub-able.) adding an animation of their squishy stomachs being massaged would be ideal and totally in line with the concept, not to mention provide a highly desired repetitive event.
oh, and the girls are too thin, but I'm going to imagine that I didn't actually make that complaint