So far a good start. Illustrations are hot and so the situations (and Jane). In some moments certain details can need some polish, though. Like specific anatomy on less conventional angles. It would be amazing if the scenes were a tad longer too.
I kinda wish a bit of a more actual love from the gf, but the current way is show is pretty hot nonetheless (it would probably scare a lot of cuckold lovers due to the heavy ntr tones, though).
Overall, pretty good with whats trying to do. Mainly I would recommend to tone down a tad the ntr tones if aiming to the most general cuckold audience, otherwise it should be able find its niche pretty well.
There is stuff to say about the puzzles but... not the main point and they are easy enough to not mind anyways.