Read manga: I Don't Want To Become Crown Princess!!

manga
Summary:

Japanese in her previous life, Lidi is a duke’s daughter in this life. Her fiancé is the Crown Prince, Freed, who is known for being flawless.“No matter how beautiful he is, I absolutely don’t want to marry a polygynous royal!”Troubled, Lidi came up with an outrageous plan for the sake of breaking off the engagement!It’s a thrilling romance where schemes and fate cross!!