This is Warring States period in Japan, a time of social upheaval, political intrigue, and military conflict that lasted roughly from the middle of the 15th century to the beginning of the 17th century.
You begin your path as Ji-samurai, lords of small rural domains in feudal Japan. Develop your lands, gather your troops, train your samurai, build your own mighty clan, do political manouvers, and or crush others who are trying to obstruct your path to the title of the "Shogun"