Sasuke is a college student and a history nerd who has made a hobby out of studying time slips. One day, he slips through one of these time slips and finds himself in the Sengoku Period, although it`s nothing like what he`s read about in the history books. He takes the name Sarutobi Sasuke and becomes a retainer of the infamous Oda Nobunaga. His first mission is to win the confidence of Nobunaga`s other famous retainers, Toyotomi Hideyoshi and Tokugawa Ieyasu.