The Tyrant's Sweet Little Bunny

Though the heroine is a princess, she lost her mother when she was young. The emperor wants to make it up to her, but this stirs others' jealousy, and she eventually becomes a bargaining chip in a war with a neighboring kingdom. The hero saw the filth and malice in people's hearts from an early age. Though he grows up to become a capable ruler, his brutal methods earn him a reputation as a tyrant. When he meets the heroine as a child, he takes her for his light. Although misunderstandings arise between them, they eventually become each other's cure.