In this Japanese name, the family name is Toyotomi (豊臣).
Toyotomi Hideyoshi (豊臣 秀吉) was one of the Three Great Unifiers of Japan. He plays a small role in the Soul series, mostly the story about stages.
Hideyoshi was at first a sandal bearer of Oda Nobunaga, the first of the three Unifiers. After Nobunaga was killed by his retainer, Akechi Mitsuhide in the Incident at Honnō-ji in 1582, Hideyoshi took over and went to conquer all of Japan. After his death in 1598, Japan was divided into East, led by Tokugawa Ieyasu and West, led by one of Hideyoshi's subordinates, Ishida Mitsunari, and following the Battle of Sekigahara in 1600, Ieyasu managed to finally unite Japan and earn the title of Shogun, the Tokugawa Shogunate would last until 1868 with the Meiji Restoration.