Oh, the girls you actually met was probably Saya herself (the other girl isn’t in the game yet) but I just realized that her event doesn’t clear the quest so it can be pretty confusing indeed, I’ll fix that for the next patch, thank you for telling me!
But that aside you are right, the game ends here for now, there are two other girls that have an event that day (the girls with a heart on top of their head.) but that’s about it for now.
Thank you for the feedback, glad to hear you liked the game!