Yamibo - Darkness, the Hat, and the Travelers of the Books - S01

<p>Hatsuki is a high school student living with her sister, Hatsumi, and she has a huge crush on her. On Hatsumi's 16th birthday, Hatsumi is suddenly wrapped in a green light and vanishes right in front of Hatsuki.</p> <p>With the help of a creature that looks like a fat baby chick (literally),Hatsuki manages to follow Hatsumi, ending up in a place called "The Great Library," which is full of different worlds kept inside books. Hatsumi isn't there, though, so the search for Hatsuki's great love begins, and it means traveling from one book to another.</p>