I can confirm that. It is unclear how they intend the ranks to distribute. Theoretically almost all girls could reach 25. But in theory almost all girls can get stuck below rank 10 too. And I suspect, the devs have no idea how to balance it.
The changed training time down to 4 hours. Benefits some players and is an disadvantage to others.
On the event, Mistlehoe can not be filmed, right? Thats bad. Stamina 20 is not much to train her stats.