Man, Rena was just messed up.
It's like the director decided to emulate Miike or something, all of a sudden. Didn't really like it. She was just too weird for me to relate to. So Minami is the dead person, which I (sorta) saw coming. The next ep looks interesting, Maeda seems to go through a total breakdown, like most protagonists. I hope a little more light is shed on what happened, I really hate that after 8 eps we still barely know anything about that sparkly wavy-hair flashback.