Fukenzen Tosho wa Kashidashi-chuu!

Tachibana Runa is a 26-year-old librarian who loves books. One day, her apartment building burns down and she loses her place to live, which leads to her being on the verge of losing her job as a librarian. Then, Meguro, a university student who also frequents the library, proposes that they live together... Attracted to Meguro, a university student and novelist, Runa decides to repay him for living with her by helping him with his work, but he turns out to be an erotic novelist... An exciting love story about an innocent librarian and a younger erotic novelist living together! (Source: Kodansha, translated)