時元戦国史 黒の獅士 陣内篇

The year is 1580 and Nobunaga Oda is working to consolidate his power over Japan. In his army are weapons of great destructive power: rapid fire machine guns, lasers, missiles and, most frightening of all, the reputedly immortal ninja Ginnai Doma. Like a sentence of divine wrath he hunts down and destroys dissident monks, ninjas and others, wherever they may be. With the clans on the brink of destruction, a single ninja accepts the impossible task: kill the immortal Ginnai.