Added after 57 seconds
I see the clue to the murder of Neb and Fragment in the phrase "Looking around and glancing back." I can't imagine anyone saying that about themselves, but I can easily imagine the Russian opening of King of Shamans, which begins with the phrase "Look around, glance back." I don't think the spirits want to contact us, but I think we should investigate in that direction.
Added after 1 minute
Okay, I'm currently experiencing irrational emotions due to what's happening. I need to calm down.
Cop, Master, if you are peaceful, please leave me alone and help me look for clues. You can come up with another plan tonight on how to figure out who I am and who Cop is, and I'm willing to follow it if it proves my peacefulness to you.
Added after 3 minutes
Nephela, I like everything in your train of thought except for the role of Mackey.
Read my posts and Cop's carefully. Do you think it's possible to consider Cop as peaceful?