Gisen Yagyu is a mysterious and enigmatic character from the anime series Hyakka Ryoran Samurai Girls. She is introduced as a vagrant warrior with a calm demeanor and a penchant for wielding a chained spear. Gisen is known for her strategic mind and her ability to manipulate situations to her advantage. She often appears aloof but is deeply invested in the unfolding events, serving as both an ally and an antagonist at various points in the series. Her complex nature and hidden motives make her a compelling figure in the story's intricate narrative.