Just as a reminder, a major feature of this game is that your choices can genuinely make a big difference in what happens. So, if you play through it once and feel like there wasn't as much new stuff as you were expecting, that'll be because there are several options (understatement) for how things can play out at this point, including how to go about the actual investigation, what day-time missions you want to go on, which girl(s) you want to spend time with, and there's even stuff that's different depending on which character you chose as player. Obviously, you don't have to play a dozen different ways, creating a headache of save file management (like I do), but just know that if you only play it once, you'll only be seeing a fraction of the content.
