Junkoku no Alpha: Omega Versailles

The French Revolution, starting with the king, sent many citizens to the guillotine, "exporting" the momentum of democratization to countries around the world—marking a turning point in history. But underneath the surface, there was another world that none were aware of... 18th century France—this was a time where the world's royalty, nobility, and commoners were separated into a 3-tier system, α (alpha), β (beta), and Ω (omega). King Louis XVI was known as the "dim-witted alpha." Queen Marie Antoinette, who came from a neighboring country in a political marriage, was ridiculed as the "lustful omega." And then there was another "girl," who resented the royal family… Desire, hate, and deception… All of them will be caught up in a whirlwind of intrigue, amidst the oncoming storm of revolution…! (Source: Shogakukan, translated)