Bungaku Shoujo

As first year student Konoha Inoue is about to leave school campus, he sees a girl eat a page from the book she is reading. She introduces herself as second year Tōko Amano, the literature girl, and asks him to join the Literature Club so that he doesn't expose her secret. After almost two years of being the sole two members of the club, a strange message arrives: a piece of paper with a peculiar drawing. Further investigation leads them not only to Inoue's past, but to the reason to why he has given up on writing novels for the rest of his life.

Synopsis from Anime News Network