The gameplay is unintuitive and the content is minimal. It's not clear whether there's a certain method to the stat gains using actions or whether it's just a roll of the dice. Despite having multiple angles to choose from, a third of them literally doesn't let you do anything other than use stripping and "shushing," the second of which basically only accelerates the decay of both the wake and sex gauges. The other two thirds have maybe only one or two interactions other than stripping her clothes, which she only has 3 pieces of. And if you somehow get the sex gauge high enough to stick your dick in her, the game just ends. You don't even build up to it. She just mumbles like 3 lines and you're shown a picture of her awake, smiling, with a creampie. And if you randomly clicked around trying to see if he thrusts, if she speaks more, or if you can do other actions, then you'll probably and unintentionally click past that picture, bringing you to the main menu screen. There's no free mode, there's no gallery mode. The art is just passable. It's not worth attempting to figure the game out to see.
P.S. As far as I know, sticking your dick in her mouth, between her tits, or anywhere other than her vagina for that matter, will raise her wake gauge by about 50%, regardless of how high her sex gauge is. No matter how much you persistently thrust into those places, you won't blow your load. Other than anilingus (which for whatever reasons will only work in the doggy style position), you can't interact with his asshole at all. Hell, you can't even choose how you wanna bone her. The game forces you to do it in missionary position, and if you don't know this, the bar might have dropped too low to attempt it by the time you cycle back to it, and you won't realize that's the correct position.