Oda Nobunaga was a Japanese daimyo who attempted to unify Japan. He was one of Japan's most brutal figures as he often would eliminate anyone in his way. He was a very skillful ruler, and also a intelligent businessman. However his attempt to be the de facto ruler of Japan did not come to be. One of his vassals attempted a coup and was successful. Oda Nobunaga committed seppuku before enemy soldiers could assassinate him.