Kyonyuu Onna Senshi Dogeza Saimin

On an isolated island in the middle of the ocean. There is an arena where warriors from all over the world gather to compete. In the arena, fighters are ranked and determined by their skills. Rumors of his abilities spread far and wide, and now hundreds of warriors from many countries have come to rank his warriors among the best. At the top, the name of a young warrior rises to the top. With her swordsmanship skills and her good looks, she is promised riches and fortune for years to come.

And at the bottom: There was a man who was staring at her with a dark gaze.