A green-haired amnesiac girl plummets from the sky into the world of an orphaned high school student, retaining only her name while her origins remain shrouded in mystery. Wary and guarded after awakening undressed in his care, she initially questions his motives but gradually acknowledges his sincerity.

Her hidden identity emerges as the exiled heir of the Underworld’s fallen monarchy, her parents slain during a violent uprising. Two younger sisters arrive, unveiling her royal legacy and the persistent danger of enemy forces hunting her. Echoes of her past surface in fractured recollections—flashes of rebellion and loss—clashing with her innate compassion, sparking turmoil as she struggles to reconcile her forgotten brutality with her gentle present.

A tentative connection with the protagonist deepens into mutual trust and affection, tested by her sisters’ demands and encroaching adversaries pressuring her to reclaim her throne. Unresolved threats loom: a shadowy new hunter stalks her, and unanswered riddles of her family’s demise linger, abruptly frozen by the story’s untimely end.

Visually, she bears dark green hair and cyan eyes, though artistic shifts occasionally lighten her palette. The truncated narrative leaves her memory fragmented, her destiny suspended between two worlds, and the secrets of her lineage forever veiled.