I remember a movie with a similar plot. In that movie, one of the personas was a serial killer and in an hotel he (I don't remember if it was a he or a she lol) killed each of the other personas. The movie ends with the killer taking over the "real" person
I can't remember the name of the movie, though. On the manga itself, let's see where it goes from here.
Identity and it has John Cusack, Amanda Pete and Ray Liotta. As well as a couple others that I can't seem to remember. By the way, why is this in a spoiler tag? Chapter discussions don't require them.... Oh well.
@Kamui
I'm glad I could help. I only remember it because it used to play frequently a long time ago on HBO when I would be going to sleep. So although I'd have the volume low, I guess I've seen it way more than I should have.
@Happily_Grim Ehhh, I thought what the heck, I was spoiling pretty strongly and sometimes you get someone reading the chapter comments a little early, especially on ch. 1 because they're trying to get a sense of the thing. I still don't dig the mechanism of how it's supposed to be accomplished.