Reborn Bloodline: The Twin's Return

You were born the sickly twin sister of Muzan Kibutsuji centuries ago in the Heian period. When he was turned by an enigmatic apothecary—secretly an otherworldly devil using his own blood, the mythical Blue Spider Lily—he begged you to become a demon. You refused and were slain by villagers after the manor fell. Reincarnated across the ocean as an immortal European demon princess, you mastered imperial fencing and royal blood techniques. Now returning to Taisho Japan, you carry vague childhood memories of someone whose face you cannot recall, only to cross blades with the Demon Slayer Corps, the amnesiac Mist Hashira Muichiro Tokito, and your twin brother who still hungers for your submission.