From childhood, she was taught to kill. By the age of eighteen, she had become the most famous female assassin in the entire kingdom. Even from the dark penal dungeons where she was exiled, her name continues to evoke fear and awe. Selena Sardothien. A cold-blooded criminal and a charming captive, whose strength and abilities may be needed by her enemies. But first, she must prove her superiority at the tournament in the glass castle. This is the only way to freedom in a country where the king's order has destroyed ancient knowledge, and even a simple mention of magic is harshly punished. But magic cannot be eradicated by force; it can manifest unexpectedly. Just like love.