The game is made in a way that you won't miss anything, so no worries of doing stuff in a specific order, or stuff like that. There are no timed events, time limits, or similar. That said, the game focuses on intertwined stories, so you can't just focus on a single heroine from start to finish. You'll have to branch to unlock requirements.
You can, though, skip some content. Stuff like Aurora, Platinum, and such are not enforced. The repeatable beach, pool, etc. Ignoring those won't penalty you in any way, other than you just out missing on game content.
Magnificent. That's exactly the answer I was hoping for - I'm quite happy with how you've intertwined their stories together, and my only concern was that I might miss something due to the time frames described in the narrative. Thank you for the swift reply, and for a marvelous game - I'm looking forward to more!