While carrying out their usual daily activities, a bunch of high school students and the entire school travel back in time to the Sengoku period suddenly! They find themselves on a battlefield facing renowned Sengoku warriors, who fight at the risk of their lives on a daily basis.These students come from a famous sports school. Armed with the skills they learnt from their clubs and their knowledge about the modern era, will they be able to survive the Sengoku period? Will they be able to return to the peaceful future eventually?Risking their youth, the high school students are about to start a war that is not written in the history.