Baby Prisoner of the Winter Castle

The day when her country had collapsed and all the royal family members were executed, the illegitimate child of the royal family who had been abused unexpectedly became the last royal family member.“One can not punish a person who is under eighteen years old to death.”Thanks to Saphers’ law, the victorious country in which underage people will not be put to death, the nine-year-old Clarisse survived.“Older Brother said that he would kill me before I become 12 years old. But to think that I can live until 18, I’m so happy.”And after raising the young Clarisse safely until 18, Maximillian who has to put her to death.“Don’t forget. That the day that child turns 18, you must bring that neck to me.”The two of them head together to the cold Northern Winter Castle, which is an abandoned territory.The 10 years of grace period which was given to Clarisse.Then, what is Clarisse’s destiny?