"Hakkenden: Eight Dogs of the East" is a supernatural fantasy anime series based on the manga by Miyuki Abe, which itself is inspired by the classic Japanese novel "Nansō Satomi Hakkenden" by Kyokutei Bakin. The story is set in a fictional world where feudal Japan intertwines with mystical elements, focusing on the intertwined fates of eight warriors bound by a shared destiny.

The narrative centers around the Satomi clan, cursed after their lord, Yoshizane Satomi, makes a desperate pact with a demonic entity to save his people. In exchange for prosperity, the clan is doomed to face destruction unless eight warriors, each bearing a mystical pearl and embodying one of the Confucian virtues, can reunite to break the curse. These warriors are reincarnations of the spirits of eight dogs who once served the Satomi clan, and their pearls grant them unique powers tied to their respective virtues.

The protagonist, Shino Inuzuka, is a young man marked by tragedy, having lost his family and village to a mysterious fire. He possesses the pearl of "Benevolence" and is accompanied by his loyal dog companion, Sousuke. Shino's journey intertwines with that of Hamaji, a girl who harbors a dark secret tied to the curse, and Sosuke Inukawa, another warrior bearing the pearl of "Duty." Together, they navigate a world filled with supernatural threats, political intrigue, and moral dilemmas.

As the story unfolds, the eight warriors gradually come together, each grappling with their own struggles and pasts. Their paths cross with allies and enemies, including the enigmatic Murasame, a sword with a sentient spirit, and the powerful yet morally ambiguous Awa clan, which seeks to exploit the curse for its own gain. The warriors' quest is further complicated by the presence of the Imperial Church, a religious organization with its own agenda, and the lingering influence of the demonic forces tied to the Satomi curse.

The series explores themes of loyalty, sacrifice, and the duality of human nature, as the warriors confront both external adversaries and their own inner demons. The narrative is driven by a blend of action, mystery, and emotional depth, with each character's journey contributing to the overarching goal of breaking the curse and restoring balance to their world. The interplay between the warriors' individual stories and their collective destiny forms the core of the series, creating a rich tapestry of interconnected lives and fates.