Rosetta was born to a poor ducal family, the Claudia family, which fell into debt due to an emperor's decree 2000 years ago. She struggles with an inferiority complex because other nobles outperform her at school despite her hard work. Rosetta has long, blonde ringlets, almond-shaped blue eyes, a small face, and fresh, vibrant lips. She is described as having a voluptuous figure with a big chest, a tight waist, and nice skin. She deeply despises those who are born with everything.