It's been a while so even I don't know them all, there's like 2 or 3 in the gym as well.
I understand that, but I personally think at least adding an individual tally for each location would be a great QOL feature, as having 1 or 2 left to find across the many locations available can get pretty frustrating.
On a separate note, the game is looking really good so far! The only major critique I have is how time is handled, especially in terms of money making activities. Most days I could only fit in computer work for income, I fished maybe 3 times total before completing all current content due to how inefficient it is, and for some reason teaching can be started at either morning or afternoon, yet both take you to evening. Morning teaching consumes two activity slots which, considering the pay, is extremely inefficient.
I think some activities could benefit from not consuming a time slot, like the morning shower scenes (except those leading into a H-Scene, ideally a dialogue option to choose if you wish to proceed or not would be ideal here).
Finally, I think having some sort of hint for girl locations (outside of quests) could be a nice QOL change generally.
This is purely my own opinion, and I understand if it doesn't fall within your own vision for the game, but I do hope it at least proves useful feedback for you!