Plot
A female fox spirit named Dakki exerts control over King Chu and the Yin dynasty, manipulating him to spread corruption and suffering throughout the land. A Doshi named Taikobo is tasked by his mentor, Genshi Tenson, leader of the Sennin World (仙人界), with executing the Hoshin Project (封神計画). This mission involves sealing Dakki and her followers in the Shinkai (神界), a liminal space between the Sennin World and the Human World. To achieve this, Taikobo must locate and defeat 365 individuals whose names appear on the Hoshin List, with their souls subsequently imprisoned on the Hoshindai (封神台), a floating island designed to contain them until the ritual is complete. Accompanied by his loyal reiju (霊獣), Supushan, Taikobo navigates a world of shifting alliances and conflicts among immortals, uncovering the extent of Dakki's influence over both King Chu and the Human World.
As Taikobo delves deeper into his mission, he uncovers the celestial struggle between gods and immortals, realizing its profound impact on mortal affairs. Caught between his duty as an immortal and his empathy for humanity, he becomes entangled in the conflict. The war culminates in the devastation of both the Sennin and Human Worlds, with countless souls confined to the Hoshindai. Following King Chu's defeat and the fall of the Yin dynasty, Taikobo prepares to return to the remnants of the Sennin World, only to discover the existence of a third realm—Dakki's hidden domain, where she and her remaining followers have retreated.
The true purpose of the Hoshin Project is ultimately revealed to extend beyond Dakki, targeting the primordial entity Joka, one of the First Persons (最初の人)—ancient extraterrestrial beings who arrived on Earth eons ago. Joka, seeking to reshape the world in the image of her lost home, repeatedly annihilates civilizations that deviate from her vision. After forming an alliance with Dakki, she orchestrates history's course until the Sennin intervene. When thwarted, Joka resolves to destroy Earth entirely. In the ensuing battle, Taikobo, recently deceased, reappears, disclosed as one of the First Persons. Drawing upon the energies of his allies and the souls within the Hoshindai, he reawakens as Fukki and defeats Joka, ending her tyranny.
Prior to this, Dakki briefly usurps Joka's form, merging with Earth's life force to become a primordial mother figure. In Joka's final moments, she implores Taikobo to accompany her into oblivion, fearing solitude. Though he initially consents, Dakki intervenes to preserve his existence. In the aftermath, Supushan ventures into the Human World to recount these events, only to find Taikobo alive yet elusive, deliberately avoiding contact while discreetly observing his companions. After a period of wandering, Taikobo embarks on a new journey, his destination unknown.
