This is one of those RPGs that annoy the crap out of me because they are set in a high school environment - see
this thread for my entirely reasonable and justified complaints on that matter.
It's also one of those that has additional content being continually added to it as long as Patreons are paying for it, so there's never any sign of when it's supposed to end - or even if you're getting close. On the other hand, you can download a version for free (available for Android, Mac, and PC -
https://summertimesaga.com/ )
No BE, but it seems that practically all the female characters you encounter are bustier than average. For example, this is Odette, the "manager" (I guess) of the town's tattoo parlor.