Ten years ago, a virus appeared that only women could be infected with, and many women died, resulting in a drastic decrease in the number of women in the empire. The upper-class nobles arrested the few surviving women, built a building called the Women's Palace, and imprisoned them here.
Ten years later, a young man who lived in a dark and oppressive world, but still maintained a sense of justice, met her.
CP: The unruly and ruthless heroine x the second male protagonist with a sense of justice