Nozomi Kasuga, a second-year high school student, has her mundane existence upended after crossing paths with Hakuryū, the White Dragon God. Thrust into a parallel realm mirroring Heian-era Kyoto amid the Genpei War’s chaos, she is anointed as the Hakuryū no Miko. Charged with sealing vengeful spirits unleashed by the Taira clan to corrupt natural energies and cripple the dragon deity, she forges an alliance with the Minamoto clan. Her mission—to restore Hakuryū’s power and reclaim her ordinary life—unfolds in a fractured world where her childhood friends, Masaomi and Yuzuru Arikawa, are scattered across time and space.

Begins as an ordinary student, Nozomi swiftly evolves into a leader and warrior, mastering swordsmanship and battlefield strategy to command Genji forces. A pivotal shift occurs when she gains a dragon scale granting limited time travel, a power ignited after witnessing allies perish in a doomed Genji offensive. Harnessing this ability, she revisits critical junctures to rewrite tragedies, transforming from a pawn of fate to a reshaper of destinies.

Emotional stakes deepen through fractured bonds. Masaomi, lost during their initial displacement, reemerges three years later as a Heike general, forcing Nozomi to navigate clashing loyalties between duty and lingering affection. Their restrained interactions, shadowed by his covert allegiances, contrast with Yuzuru’s unspoken devotion, weaving personal longing into her cosmic burden.

Her journey hinges on relentless temporal interventions to shield companions, balancing priestess obligations with human ties. Each leap through time sharpens her resolve to carve a path where survival eclipses sacrifice, cementing her evolution from reactive guardian to architect of a salvaged future. External media references hint at expanded lore, though core narratives focus on her struggle to reconcile agency with destiny’s weight.