However, I didn't understand much from it, because I thoroughly searched the entire cemetery and found nothing. It seems it was in the third episode? Or the first? Whatever.
I never crafted anything from the art pieces, and I didn't find all the items for the companions. Should I still be asked, or is it better to check a walkthrough on the same LKI? (:
Added after 1 minute
But I remember that when you enter one door of the cemetery and go underground, you exit from another door that was previously locked. Perhaps this is related to the matter.