22/7

Miu Takigawa's life involves working part-time to support her mother and younger sister, Haru. Reserved and timid, Miu struggles to interact with customers. The arrival of a letter from GIP, announcing her selection as a candidate for a new project, unexpectedly turns her life around. She decides to accept the invitation and meets the other candidates at a secret facility managed by GIP, where they're given strict instructions to follow "The Wall.