This game is a good trainer. The art is nice, the animation is nice, the story is fine although shallow (serves its purpose), the writing is pretty good too. It could stand with having more poses, girls, or content in general, but as it stands it is a good game without.
The only reason I gave it 4 stars instead of 5 is there are fairly frequent bugs that impede gameplay. They're not game breaking (assuming you're not a brain dead numpty and can troubleshoot a bit with the UI), things like the girl getting stuck in an orgasm loop that you cant break out of, or the game getting stuck between penetration and fondle modes. For each bug I encountered (minus one that caused random mouse movements), I was able to resolve myself in-game within a minute or so. However, these bugs do exist, they are mildly annoying.
Otherwise, a great game. 1hr for a single play. Just do it on easy, idk why these games have difficulty modes. Easy just gives you more time (aka prevents you from blue balling yourself).