Sengoku Blood: Bara no Keiyaku

When twins are born to the Oda household, Karin is cast aside as the unwanted daughter while her brother, Oda Nobunaga, is groomed as the heir. Throughout her lonely childhood, her brother remains her only source of warmth and support. As they grow into adulthood, Nobunaga emerges as a visionary leader with grand ambitions to unify a fractured world and create a realm of peace and prosperity. Karin, inspired by her brother's noble ideals, finds herself drawn into the epic struggle that will determine the fate of nations. In a world where power comes at a price, she must navigate the treacherous path between loyalty and ambition, love and duty, as she discovers her own role in the grand tapestry of history.