Roppyaku Page no Mystery

A girl named Asami enjoys reading in a library in her hometown, where she is particularly fond of the young and unconventional librarian, Mizushima-sensei. He is well-liked despite his peculiar nature. When graffiti appears in the books Asami values most, the peaceful setting of the library is disrupted. The situation raises questions about how their shared appreciation for books and a vision for an ideal library might affect their relationship.