Is this love wrong?

Y/n is the queen of parigal. However, she is not any normal queen, she is known for her brutality and heartless nature. She will purposely start wars, or just simply remove someone head for not kneeling when meeting her. No one dared to mess with her, not even other kingdoms. Y/N's kingdom was known for its strong soldiers plus wealth and loyal people. However, one assassin was unlucky to meet the queen, well that's not how he thinks of it. Tae hyung was this assassin. Tae was intrigued by the queen. He annoyed the queen, however the queen couldn't simple get rid of him due to him being to skilled. So, she is forced to live with him and his antics. What if Tae is able to get through her cold heart? What will he find..?