Exchange student simulator, as a story.
It's NOT about pumping - it's a story with different story lines, variations in plot development and fetishes and endings. No stats, no день\ночь, no clock or timer or anything like that. There is no need to "pump" YG, although your current choices affect the development of the plot or the acquisition of "peaches.
There are 2 completed finals, but also a lot of unfinished lines.
The variation in the story is quite large - from an excellent student to a local escort prostitute.
The themes of pregnancy, hamster cages, bondage, obedience and other things are also in abundance.