A lot of the investigation segments have you stumbling through areas looking less for evidence and more for how to trigger the next flag to make an NPC arbitrarily decide you can ask them something else; often it's not even a relevant trigger, it's exhausting all other possible options rather than finding something specific you're looking for. Courtroom phases in this game feel especially punishing, as in mistakes take out more of your meter than they did in the previous game, and in some instance result in an instant loss, which just drives home how pointless a loss state is in a VN like this.
(played on 3DS collection)