Hourlies: Single Identity

In the year of 20XX, a school named New Sriwijaya 70 High School holds so much mystery. Giving the fact that there is so many rumors, including ghosts to tragedies happening in the past. Bonnie Oryx, the protagonist is attending at that school. But then later on she got herself in one of the school tragedies. Her friend, got killed in a really gruesome way. She needs to find who's the culprit. But this is already hundred of times she has been looping to find the one who killed her friend. Will she find out who's the culprit behind the mess? And will the mystery behind the school be revealed?