Oda Nobunaga is the protagonist in Nobunaga the Fool. The character is loosely inspired by the real-life Japanese warlord of the same name. This Oda is the legitimate heir of the country of Owari on the Eastern Planet. He's often called “The Fool” due to his wild and unconventional way of life, but he possess the ability to see the true nature of things. After his encounter with Jeanne, he becomes a man who brings revolution to the way wars for domination are fought.

(Source: Nobunaga the Fool Wikia)