Nobunaga provides the legitimate name for the conquest, while Rance provides the tactical (and often chaotic) force.
He soon encounters Oda Nobunaga—not as a terrifying warlord, but as a man working in a small restaurant with his sister, Kou. Nobunaga, finding the tedious logistics of national conquest to be "too much of a bother," strikes a deal: he enlists Rance to act as the hidden hand behind his reign. Rance, seeing an opportunity to use a whole nation's resources for his personal pursuits, accepts the role of secret warlord. Sengoku Rance PC
Rance's primary motivation remains his personal desires, even as he effectively leads the Oda clan to dominance. Nobunaga provides the legitimate name for the conquest,