Who is the queen consort?!

"Iris Cloudformer, I hereby dissolve our engagement on this very occasion!" It was a sudden declaration at the King's birthday celebration. "I am aware of the despicable things you have been doing to this delicate young lady, Sophia Ranruke!" The girl standing beside the man looked up at him in surprise. Her expression was filled with astonishment. Oblivious to this, the man continued. "I cannot allow such a woman to become the Queen of this nation!!!" "Huh?" What is this guy saying? Who's becoming Queen?! Iris Cloudformer The sole "princess" of this country gazed with exasperation at the man who had just declared the dissolution of their engagement—Gilbert Nursery, the second son of a marquis household.