In Kyokutei Bakin's classic Japanese epic novel Nansou Satomi Hakkenden, eight samurai serve the Satomi clan during Japan's tumultuous Sengoku (Warring States) era. The Edo-era samurai are the reincarnations of the spirits that Princess Fuse mothered with a dog named Yatsufusa. In Fuse Gansaku: Satomi Hakkenden, the female hunter Hamaji comes to her brother in order to hunt Fuse. Thus, the karmic cycle of retribution that began long ago with the Satomi family begins anew.

An original video anime, released on Blu-ray in a combined Hybrid Disc that also hold an Eureka Seven AO game for the PlayStation 3. The OVA is set between episodes eight and nine of the series.

A hapless country doctor describes with breathless urgency a night-time summons to attend a young patient. Events soon take on a surreal aspect as "unearthly horses" transport him instantaneously to the bedside. The doctor, preoccupied with personal distractions and grievances against those he is employed to care for, fails to find what is revealed to be a vile, fatal wound. He is humiliated by the villagers, who are "always expecting the impossible from the doctor," and doomed to an endless return trip, losing everything.

Hidden away on a remote mountaintop, the Kokoro Library struggles to attract many visitors. Nevertheless, it is the home of sisters Iina, Aruto, and Kokoro, who consider it their mission to keep the library running in their parents' stead. Kokoro has long dreamed of becoming a librarian at the library with the same name as her, and tries her best to keep up with her older sisters. Due to the lack of patrons, the girls mainly spend their time sipping tea, chatting, and reading. However, as the number of mysterious visitors progressively increases, Kokoro begins to learn about the strange history of Kokoro Library—a place where small miracles seem to blossom.