The Villainess is a Marionette

Princess Kayena Hill spent her past life being manipulated like a puppet by her tyrannical brother, Regef, who eventually murdered her. After a brief reincarnation in modern Korea, she wakes up back in her original fantasy world for a third life. Armed with knowledge of the future, Kayena vows to break her puppet strings. She forms a powerful alliance with the cold Duke Raffaello Kidrey to outmaneuver her brother and secure her freedom.