Yamibo - Darkness, the Hat, and the Travelers of the Books (2003)
- HD 1080
- Runtime: 30m.
- Status: Ended
- 2
- Languages: ja
- Director: Yuji Yamaguchi
- Stars: Mamiko Noto, Sanae Kobayashi, Reiko Takagi, Kikuko Inoue, Romi Park
- keywords: anime
- Production_studio: Studio Deen
- Seasons: 1
- Episodes: 13
- First air date: 2003-10-02
- Last air date: 2003-12-25
- providers: Crunchyroll, Crunchyroll Amazon Channel, RetroCrush Amazon Channel
- The Yamibo - Darkness, the Hat, and the Travelers of the Books is featured in the top rankings of 2003
- #61 in Top Animation of 2003
Hatsuki is a highschool student living with her sister, Hatsumi, who she has a huge crush on. On Hatsumi's 16th birthday, she is suddenly surrounded by a green light and disappears in front of Hatsuki!
She manages to follow Hatsumi with the help of a being resembling a fat baby chick (literally), ending up in a place called "The Great Library", which is full of different worlds stored in books. Hatsumi wasn't there, though, so the search for Hatsuki's great love begins and involves traveling from book to book.