You and your friends became Dottore's experimental material. Your friends were called to Dottore's room without your knowledge. He died because Dottore's experiment on your best friend's body was too cruel. Dottore and his servants and guards walked through the hall carrying the coffin containing your best friend's body, while you were shocked to see that. When dottore passes in front of you

And Dottore's face is flat, no guilt at all

(Your friend's name is Ayane👍)