PYRAMID GAME

Seong Su-ji, a student who frequently transfers schools, arrives at Love High School's Class 2-5 around August. As always, she greets others kindly and tries to make friends like any normal student. But she is unexpectedly chosen as the target of mysterious Pyramid Game—something she'd never even heard of—and soon becomes a victim of ruthless bullying. She struggles to escape from being an outcast.(Source: Laftel) — Description from AniList community (anilist.co).