The cat that saved the books - Suzuki Natsukawa

Rintaro Natsuki is just a weak high school student, his parents separated when he was young, and his mother died in her youth, so his grandfather took care of him when he reached elementary school. Since then, he has been living with his grandfather alone. His grandfather owns a small bookstore selling old books called "Tatsuki Library," located in a neglected corner of the city. Then suddenly, his grandfather dies, and his aunt, whom he has never met before, decides to take care of him. He begins packing the bookstore's books to get rid of them, when suddenly a cat from the depths of the bookshelves appears before him, speaking like a human, telling him that it needs help to save the books. A Japanese novel translated into more than 35 languages around the world and achieved top sales since its publication, and is considered one of the most important recent works in Asian literature.