Let’s say this works like a little management game. The time is divided in days, and each day you have a set of point to spend to perform actions. With this actions, you increase the relations ship with the main 3 heroines, do mini games, buy stuff from the shop, and perform various little tasks for different “side missions“ to interact, and screw, with other girls outside the main 3.
Doing stuff you also gain point called memories that you can use to unlock new abilities and sex positions.
All in all this part is good. The game is kinda solid.
When you unlock sex stuff, you will have a combinations of little animations and the classic illustrations with dialogue. I think that overall the quality is good.
I gave a 3 out of 5 because there is not development of the relationships with the girls. All the girls will want to have sex with you without a reason.
One of the side girls, a p.e. teacher, will have sex with you if you beat her in a race. You don't know her, she is not presented as perverted, no cliches like hypnosis or whatnot, nothing. You don’t even need to beat her, you will just assault her in mid race and she will go with it. I know I’m playing a porn game, but I like when the sex in justified. Should you be like me, maybe this game will feel a bit off.
Another problem, tied to the first, is that the dialogues you have to read in the sex scenes are plain. The girls just roll with it, so all the dialogues are more or less the same. If the girls have no reasons to screw with the protagonist, you can’t write proper dialogues for them. They miss a core. A line to follow. You can just skip them, because they don't tell nothing. Here too, if you don't care for this stuff I think you will enjoy this game, otherwise, maybe it will feel off.