Toshoshitsu No Kanojo Seiso Na Kimi Ga Ochiru M New -

The title suggests that the story might follow the daily life of a high school girl who works in the library, possibly navigating her relationships with her peers, and dealing with the challenges of adolescence. The phrase "Seiso na Kimi ga Ochiru made" implies that the story might take a more dramatic turn as the protagonist faces difficulties or setbacks.