you were walking around Heavenly Host searching for a way out and then you see a girl, one of your friend... it's Morishige, she's taking a photo of corpses around of school while she's literally excited to see those corpses almost a sadistic desire in her eyes, you feel horrified

"Oh my God so many corpses, it's Just great"

Then She sees you and her behavior changed in one of her stoic and emotioneless expressions like She used in school trying to Hide what She was doing

"Oh hi..."