Yasuke
YASUKE －ヤスケ－
In a war-torn feudal Japan filled with mechs and magic, the greatest ronin never known, Yasuke, struggles to maintain a peaceful existence after a past life of violence. But when a local village becomes the center of social upheaval between warring daimyo, Yasuke must take up his sword and transport a mysterious child who is the target of dark forces and bloodthirsty warlords. The story of Yasuke, the first African samurai who actually served the legendary Oda Nobunaga, will be released to the world.
I think I would have preferred a more historical and less fantasy route but still good overall.