Having lost the war against the enemy Belkian Empire, Guest, the Third Princess of the Kingdom of Roselia, is brought to the Empire. While her parents and brothers are cut down before her eyes by the Imperial Grand Duke Craid,

"Those under the age of 20 cannot be executed."

Due to this Belkian Imperial Law, Guest is to live as a prisoner of war at the Spencer Grand Ducal estate for about four years until she turns 20.

It is originally a cruel stay of execution, but for Guest, even if it's only for four years and even if the treatment is just to keep a prisoner healthy, it will be her first and final paradise-like happiness. This is because Guest is an illegitimate child and was hated and abused in the Kingdom of Roselia.

"Do I really get three meals a day?" "Am I allowed to study?" "Is it really okay to sleep in a soft bed or sit on a sofa without getting in trouble?" "A bath... I thought there would only be cold water..."

The Imperial Family wants to erase the royalty of the defeated nation immediately regardless of the law; Craid believes the law must be upheld but finds his heart gradually moved by Guest; the servants of the estate want the prisoner gone, and the Duke's daughter has her sights on Craid. Their hearts begin to change as they spend time with Guest. (Though the Duke's daughter's heart won't be changing.)

■ Guest: Third Princess of the Kingdom of Roselia / Illegitimate child of the King and a maid / Inherited her father's eye color
For other details, refer to the Talk Profile.