Great fantasy, slice of life, isekai series. There are about 4 total seasons out as of writing.
It's a story of a modern girl that is obsessed with books and reading who dies at the age of 18, and is reincarnated in the body of a sickly young girl named Myne. Her passion and love for books and reading are so undying that, even in her sickly body, she is willing to do everything she can to create books in a world where books are rare and costly.