MC dick is even bigger than his own FOREARM... it's unnecessarily and ridiculously big, a slithly and I insist on just and only "SLIGHTLY" smaller D would have been just fine... I understand that if it is to small well the game would be whatever/boring, both extreme (to small or to big) are unrealistic and kind of break the immersion (I know it's a porn game still my pals you can't tell me that a game with a good/ok immersion isn't better).
Otherwise except for this, the models and animation are nice, for the story its a bit early to say so idk but still the game have good potential so keep it up dev and continue your project.