During the tumultuous Sengoku era in 1579, a young woman, who has endured profound loss, embarks on a relentless quest for strength and a warrior's demise. Once surrounded by familial bliss, Reiri's world shattered when enemy soldiers descended upon her home, leading to the ultimate sacrifices of her parents and brother to ensure her survival. Rescued by the enigmatic Okabe Tanpa no Kami, she honed her combat skills under his tutelage, fervently pursuing a glorious end on the battlefield. Yet, the journey towards her coveted death might not unfold as swiftly and directly as she envisions.