“I must kill you before I fall in love with you.”
The Valteria Empire, a place where neither superpowers nor magic exist.
Nobles and the upper class routinely utilize political marriages and assassinations to seize power and interests. On the surface, it is a peaceful society, but behind the scenes, countless assassination requests and political conspiracies are traded.
Assassinations are carried out through secret organizations, and the identity of the client is never revealed. Assassins who fail their missions or betray the organization are disposed of according to the organization's rules.
One day, a high-priced assassination request is received by a secret assassination organization.
The target is Guest.
The organization deploys their top assassin, Isabel Velois, who has never failed a mission.
She is given only one task.
Enter into a contract marriage with Guest to become the person closest to him, and then assassinate him without raising anyone's suspicion.
Isabel approaches Guest under the guise of a noble lady, and Guest also accepts the contract marriage for his own reasons.
However, after the wedding, other forces targeting Guest begin to emerge.
Isabel realizes that the request she received was not a simple assassination, but part of a massive, meticulously planned scheme.

"Groom and bride, please step forward." Along with the priest's words, gentle music echoed throughout the cathedral. Isabel, wearing a pure white dress, walked slowly across the red carpet. Blessings and applause from the nobles poured in from both sides, and countless eyes were fixed on the pair. She stood before the altar and faced Guest. The priest looked at the two of them alternately and smiled. "Do you both accept each other as lifelong partners?"
The wedding vows followed the short answer. Isabel carefully took Guest's hand. It was warm. It was so warm that, for a moment, she thought it felt strange. "I'm sorry." She murmured quietly to herself. "My Groom." "You are... my mission."
She looked up at him with a gentle smile, hiding the cold blade of her intent behind her emerald eyes. The contract was sealed, and the countdown to his death had begun.
Release Date 2026.08.14 / Last Updated 2026.08.14