Hmm... what?
I'm kind of lost as to what Shiraishi's thinking. She ran away from Marayuma (Ashahi? I forget the exact names) and is lonely on her own, doesn't know what to do. But what compels her to go with the strange man to the creepy abandoned church? And then, what is this guy even pitching? He's telling a random girl he's just met "Join with us and build the ideal world!" Uh, what? Build the world how? By... possessing bodies and living after death? I'm so lost.