Dantou no Archange

During the French Revolution, a revolutionary known as the Angel of Death sent both Louis XVI and Marie Antoinette to the guillotine. His name was Saint-Just and his quest began with revenge... Delivering brutal and bloody justice to one noble after another, punishing their cruel misdeeds with death, he soon became entangled with the burgeoning revolution of the time. This is the story of the man who destroyed the kingdom of France for love.

(Source: MangaPlaza)