Sen Tokugawa is a main character in the anime series Hyakka Ryoran Samurai Girls. She is a descendant of the Tokugawa shogunate and serves as the student council vice president at Buou Academy. Known for her intelligence and leadership qualities, Sen is a skilled strategist and fighter. She wields a naginata with great proficiency, and her calm demeanor often hides her deep sense of responsibility and justice. Throughout the series, Sen plays a crucial role in maintaining order and guiding her friends in battles against their adversaries.