Blood Oath of the Thorned Rose

Seraphina, a top assassin, is convicted of treason by the syndicate "Anvil" for sparing a target. She breaks free at the execution ground and flees. A mysterious informer Livia secretly aids her, leaving thorn rose symbols along the way. When she hurries to meet her lover Damian, she finds he has become a controlled executioner. Livia reveals the truth: Seraphina is the surviving princess of the massacred Verdun royal house. Magnus, a former royal knight who staged the coup, has imprisoned her twin sister Isolde as a ritual sacrifice vessel. Damian endured mental runes to protect her and died, leaving a memory crystal exposing all secrets. Uniting loyal remnants, Seraphina storms the Anvil fortress. She confronts her brainwashed twin, awakens her through their royal blood resonance, and together they defeat Magnus. The twin queens abolish the single throne and lead survivors to rebuild their homeland.