Queen's Blade

From the introduction: In the Continent, a tournament called the Queen's Blade is held once every four years to determine the most beautiful and powerful Queen. Held in Gainos, the Queen's Capital, various fighters from all over the Continent travel to the Capital to defeat Aldra, the current Queen. The overall story of Queen's Blade focuses on Leina, the heiress of the esteemed Vance Family and next in line for the throne, as she travels to Gainos, encountering many other warriors also competing in the Queen's Blade for their own intentions.