Obscure Demons, as its name suggest was a group Peter found during his middle school. This group was filled with weird people with weird obsession. Obsession gives rise to belief and belief forces us to do something that might be good or bad for society.
And, Peter is not comfortable with that group. Especially now, because his current mind is no longer blinded by that belief. But, he can't argue the power of that group. Peter stands on his foot and leaves a note near Camellia, taking her phone.
After that, he asks the doctor to see his parents. It was hard. Seeing his parents on the bed in their condition, was really hard to see. He mustered his courage and walked inside the room. There was equipment that was attached to each other.
These equipment were maintaining their lives. He walked in front of them and said "Dad, Mom, I've returned."
"I'm sorry! I'm sorry for putting you through this. I'm sorry for blinding myself."