In the ancient Tensho Era of Japan, a man named Kabuto emerges as a defiant force against a malevolent demon, aided by benevolent gods. As the wicked Black Night Demon, Kuroyasya Douki, breaks free from his infernal confines to seek retribution upon Kabuto's lineage, a perilous battle unfolds. Armed with lethal sorcery and unparalleled swordsmanship, the demon poses a formidable threat. Yet, the deities of the cardinal directions unite to support Kabuto in upholding justice. Empowered by a sinister blade crafted by his father, Kabuto navigates treacherous waters, striving to safeguard his legacy and witness the birth of his own descendants.