Ohh, lots of magical girls got defeated here, seems the girl who can redo the time (the sister of the policeman?) plan this carnage. Poor Aya, her "girfriend" died but his shitty bro still alive. There is no pace for these girls, more pain and suffering are coming. XD
Why i have the feeling that these died magical girls can be turned into admins? I still think the author don't want to kill off Yatsumura so easily after all these chapters (and expecially chapter 54).