Description- Sengoku Musou 4 DX is centered on the Sengoku period of Japan, a period of much military conflict and political warfare where Japan was divided between regions ruled by daimyōs that lasted from the middle of the 16th century to the early 17th century. The earliest battle is the battle of Itsukushima, fought between the Mōri clan and the Ōuchi clan in 1555, with the siege of Osaka, fought between the Tokugawa clan and the Toyotomi clan in 1614-1615.