The absolute best exhibitionism/exhibitionist game I have played, I don't think anything else will compare to it besides the upcoming sequel. The reason for this being that it primarily focuses on the shy/embarrassed but daring and controlled trope of an exhibitionist which I feel has been done a few times such as in Roshutsu or other games but this game just simply does it best.
The art or in this case 3D models are revolutionary in this landscape of mostly 2D exhibitionist games, not only are they 3D models, they're good 3D models! The ability to customize the model is very praiseworthy as well and allows you to indirectly indulge in other kinks and fetishes while still maintaining the exhibitionist overtones. The ability to buy and customize your character with tattoos, clothes, toys and other items is also another thing you can tack onto this praise of the models, allows for immersion as the character.
The gameplay itself is god-like in comparison to most porn games, the challenges presenting rewarding ways to play and exhibit yourself (or Sereka in this case). The gameplay is something you actually may have to force yourself to pay attention to (you can adjust the difficulty to make it braindead if you're worried) and is actually fun while being jerk off-able at the same time.
A complaint others (but not me) may have is the fact that the game is only a bit grindy (30-2 hours but honestly you can enjoy this game leisurely and just by playing you will unlock all the content.) but the fact that the game is enjoyable at the start and the dangling of even further and more erotic prospects encourages you to keep playing until you unlock them. (For example, the ability to throw off your coat is locked behind a certain amount points or gameplay.)
Overall the only complain I have would be the lack of mechanics that other exhibitionist games have such as peeing, public restrooms, more maps, such and such but all of this is to be included in the sequel which I am waiting for like a dog, but everything else I've said about this game completely compensates and overdoes the missing mechanics to the point where you forget those things have potential in an exhibitionist game or environment.