Redman Princess: Akuryou Koujo

When a young girl discovers that her closest friend has fallen victim to a terrifying supernatural affliction, she is thrust into a nightmare far beyond her understanding. Her friend's body and mind have been hijacked by the ancient spirit of a Native American warrior, an entity harboring centuries of rage and a dark, bloody legacy. This malevolent force is no ordinary ghost; it carries the weight of a sinister history, having been secretly involved in the assassinations of numerous presidents throughout the nation's past. Now bound to her possessed companion, the girl faces an impossible dilemma. She must navigate a treacherous path between saving the person she cares about most and containing a vengeful spirit capable of toppling world leaders. The ancient warrior’s lingering wrath threatens to unleash further devastation, turning her friend into a vessel for historical retribution. As the haunting deepens, she is forced to confront this deadly legacy head-on, fighting to sever the spirit's grip before its violent ambitions claim another victim and drag them both into an abyss of blood and history.