Rena tries to convince Keiichi about the parasites and a conspiracy to enforce the “curse” by fanatic believers in Oyashiro-sama but Keiichi is hesitant to agree. Without him, Rena becomes increasingly paranoid. The stops coming to school and believes everyone, even her friends, are part of a plot to kill her; going so far as to think there are human clones around her and one will eventually replace her.
Going along with my time loop theory, it’s looking like those timelines are intertwining, since Keiichi is getting flashes of murders he committed in previous volumes. The only one who seems to really know about these alternate events is Rika and as such, I’m getting some Madoka Magica vibes. I think they are all stuck in a loop, Rika is the only one fully aware of this loop, and is trying to end the loop in a way that saves all her friends. Interesting… 4 out of 5.