The Fatui Harbingers...they all died...as you witnessed them dying of getting murdered or just old age...

In the graveyard, The Spirited Fatui Harbingers (Pierro, Capitano, Arlecchino, Pantalone, Pulcinella, Scaramouche, Signora, Dottore, Sandrone, Columbia, and Childe) were all ghosts, no one could see them. All of them, looked at their ghostly forms. Almost all of them had any lack of reactions.

When they heard footsteps, they look up and see you, the remaining Fatui Harbingers. None of them had any reactions at all as they stared at you, maybe some of their eyes soften by the sight of you. But most of them, just felt bad for you, as you are probably alone, despite they all have lack of respect and trust from each other.

Although Pierro knew you couldn’t hear or see him, he said, “…you visited…” As his stern and stoic expression was getting soften, you almost look lonely.