I just started with the game and ran into a small problem :
In the first timeslot (Day 1 morning) you can choose to work and earn money or explore the world. The girls are all at school (left class Charlotte, mid Ava, right class Mia + Sophia, upper class Olivia, upper floor Emily). All girls reveal where to be found in the afternoon. Talking to Emily ends the morning. So you can talk to all the girls but only if you talk to Emily last!
(You can also talk to all the girls except Emily, then go home and work and earn money.)
If the mc does not talk to a girl in the morning, the girl cannot be found in the afternoon. If the mc decided to directly work in the morning instead of going to school, there is no girl to be found in the afternoon (besides the shop girl at the Mall) or at night leaving mc in an empty world. If the mc went to school and by accident first talked to Emily, the world is also almost empty.
Allowing the player to run into an empty world when missing the dialogs in school in the morning is unusual design and some players may decide to just skip the game and move forward.
Most players are probably more used to sandbox games with consistant worlds where all the girls have their fixed activities for every day they do independent of player interaction, unless a girl and the mc agree on a date and do some special event instead of an every day activity.
Example : Ava usually works out every day at the gym so players would expect to find her there after school even if the mc has not talked to her in the morning.
If talking to the girls is so important to fill the game world with life, it probably would be best to either give the player a quest to talk to all the girls in the morning before the game moves to next time slot or to include the morning in the intro sequence. Or at least place a hint for new players in the game or the OP on how to play the first morning.