Yoichi Nasu, also known as Nasu no Yoichi, is a fictional character from the anime and manga series 'Drifters.' He is based on a historical figure, a samurai archer renowned for his exceptional skill during the Genpei War. In 'Drifters,' Yoichi is one of the warriors transported to a mysterious world to fight against the Ends, a group threatening to conquer this new realm. With his remarkable archery skills and calm demeanor, Yoichi plays a crucial role in the Drifters’ quest to save the world from destruction.