Junji Ohno, the master of period novels, Yo Tsumoto, and the new standard-bearer of Sengoku manga!! The target is the demon lord Oda Nobunaga!!The first year of Genki--. Nobunaga Oda, who forcibly unifies the world, clashes with Ishiyama Honganji, the head temple of Jodo Shinshu Buddhism. Gathering under the banner of Namo Amidabutsu was the strongest gun group in the Sengoku period, the Kishu Saikashu. Saigashu skillfully wields guns, which were considered new weapons during the Sengoku period, and torments Nobunaga, an enemy of Buddhism. In the 4th year of Tensho, Shichiromaru Otani, the youngest son of the Saika Toshiyorishu, meets his first battle on board. The bloody battlefield transforms him into a warrior.