絶叫学級 転生

A transfer student arrives at a prestigious middle school where the students appear flawless and the atmosphere feels unnaturally perfect. On her first day, she meets a quiet, silver-haired girl who warns her that something is terribly wrong with the class. Strange events soon unfold: classmates suddenly change personalities, disappear without explanation, or behave in eerie, synchronized ways. The new student discovers that many of her peers are not who they seem and that dying inside the school triggers a horrifying cycle of replacement. Together with a small group of genuine survivors, she struggles to uncover the rules of this deadly loop before she loses her own identity forever. (Unreviewed summary by Grok 4.1)