Hori Misao aka Orenjiri (orange lily) is the only heir in Misao dynasty. A collusion was being prepared against the emperor, and he was killed when Hori was 15. On that day she swored to pay off the death of her father. She devoted her life to war and revenge. Before killing, she sends an orange lily to the enemy as a symbol of revenge. All addressees are already dead, but the main conspirator is still alive - he is her former fiance, for whom she still has feelings.