Baby Prisoner of the Winter Castle

The night the country was defeated and all the royal family were executed. Clarice, who naturally thought she would die too, You hear something unexpected. “No one under the age of eighteen can be put to death. Instead, the day you turn eighteen, I will kill you.” The ten years given to Clarisse like that. Clarice heads to the North as a 'prisoner'. And I ask the Archduke for just one thing... “Um, is it okay if I take this friend with me? "You're my only friend." What Clarice offered was It's none other than a stone? A new life in the North! But this life as a ‘prisoner’ It keeps getting better...?