Yamibo - Darkness, the Hat, and the Travelers of the Books (2003)

In this mesmerizing Japanese anime series, we follow Hazuki, a high school girl ensnared by an unrequited and forbidden love, as she embarks on an extraordinary journey through a myriad of fantasy worlds. Hazuki shares her life with her adoptive sister, Hatsumi, and their bond, once innocent, has morphed into a consuming passion that leaves Hazuki wrestling with her own feelings. On the night of Hatsumi's sixteenth birthday, Hazuki surrenders to her longing and attempts to steal a kiss from her sleeping sister, setting off a cascade of events that sees Hatsumi vanish in a burst of blinding light. The world as Hazuki knows it crumbles, only to be replaced by the sudden appearance of a chatty parakeet who guides her to a magical library - a universe of boundless realities, each contained within its own book. This cosmic library is presided over by the charming Lilith, a blonde girl gifted with the ability to traverse these diverse book worlds. From the rugged landscapes of the Stone Age to the infinite expanse of outer space and numerous realms in between, Lilith becomes Hazuki's steadfast companion. Together, they voyage through these fantastical worlds, with Hazuki's relentless pursuit of Hatsumi propelling their quest. This intricately woven tale of love, loss, and adventure is sure to captivate viewers, drawing them into Hazuki's unfolding saga across the universe.

Yamibo - Darkness, the Hat, and the Travelers of the Books is an anime show featuring Mamiko Noto and created by Tomomi Mochizuki.

Yamibo - Darkness, the Hat, and the Travelers of the Books is currently streaming for free (ad-supported) on Retrocrush and Tubi TV and it's also available on Crunchyroll, Crunchyroll Amazon Channel, Hoopla and Viewster Amazon Channel.

It is also possible to buy Yamibo - Darkness, the Hat, and the Travelers of the Books on Apple TV.