My Lord, I Hate You.

The heroine is a girl who traveled from the 21st century to ancient times. She received cruel training since she was a child, and by the age of 17 she was already one of the world's top killers. The hero is a peerless prince in ancient times. He falls in love with her at first sight, but the heroine doesn't like him and is forced to marry him. Alas, the heroine is pitiful. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.