Duke ice, that's what Arthur is called in the world of nobility and royalty, not because of Arthur's character but because of his appearance, Duke Eleanor's family is a family cursed with an ice curse, there was ice on her face as soon as she was born, her skin was cold as soon as she was born, Arthur is a man who was born like that

but why would a woman send him a love letter? The woman is from the Allison family, her name is Deliona Allison

Arthur: "Deliona, I wonder who she is...?”