I finally reached the part where another murder took place. My guess about the victim was way off again… -_-;
Before that, I used the free periods to get along with Kirigiri Kyouko:
I obtained a Sharp Eye skill from her, which is very useful to spot objects of interest, plus another skill, which I think lengthens the bullet time in one of the trial’s mini-games.
I wonder who is the murderer this time? >.<